/**
 * @preserve
 * jquery.layout 1.6.3
 * $Date: 2018-04-14 08:00:00 $
 * $Rev: 1.0.6.2 $
 *
 * Copyright (c) 2014 Kevin Dalman (http://jquery-dev.com)
 * Based on work by Fabrizio Balliano (http://www.fabrizioballiano.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * SEE: http://layout.jquery-dev.com/LICENSE.txt
 *
 * Changelog: http://layout.jquery-dev.com/changelog.cfm
 *
 * Docs: http://layout.jquery-dev.com/documentation.html
 * Tips: http://layout.jquery-dev.com/tips.html
 * Help: http://groups.google.com/group/jquery-ui-layout
 *
 * History
 * 2016/28/10 - Added responsiveness - marc magon
 * 2018/01/27 - Updated the toggler class and responsive properties
 * 2018/04/02 - Switch unbinds to .off() as recommended
 */

/* JavaDoc Info: http://code.google.com/closure/compiler/docs/js-for-compiler.html
 * {!Object} non-nullable type (never NULL)
 * {?string} nullable type (sometimes NULL) - default for {Object}
 * {number=} optional parameter
 * {*}   ALL types
 */
// NOTE: For best readability, view with a fixed-width font and tabs equal to 4-chars

(function ($) {
// alias Math methods - used a lot!
        var min = Math.min, max = Math.max, round = Math.floor, isStr = function (v) {
                return $.type(v) === "string";
            }

            /**
             * @param {!Object}   Instance
             * @param {Array.<string>} a_fn
             */
            , runPluginCallbacks = function (Instance, a_fn) {
                if ($.isArray(a_fn))
                    for (var i = 0, c = a_fn.length; i < c; i++) {
                        var fn = a_fn[i];
                        try {
                            if (isStr(fn)) // 'name' of a function
                                fn = eval(fn);
                            if ($.isFunction(fn))
                                g(fn)(Instance);
                        } catch (ex) {
                        }
                    }

                function g(f) {
                    return f;
                }

                // compiler hack
            }
        ;

        /*
     * GENERIC $.layout METHODS - used by all layouts
     */
        $.layout = {
            version: "1.6.3"
            , revision: 1.6003 // eg: ver 1.4.4 = rev 1.0404 - major(n+).minor(nn)+patch(nn+)

            // $.layout.browser REPLACES $.browser
            , browser: {} // set below

            // *PREDEFINED* EFFECTS & DEFAULTS
            // MUST list effect here - OR MUST set an fxSettings option (can be an empty hash: {})
            , effects: {
                // Pane Open/Close Animations
                slide: {
                    all: {duration: "fast"} // eg: duration: 1000, easing: "easeOutBounce"
                    , north: {direction: "up"}
                    , south: {direction: "down"}
                    , east: {direction: "right"}
                    , west: {direction: "left"}
                }
                , drop: {
                    all: {duration: "slow"}
                    , north: {direction: "up"}
                    , south: {direction: "down"}
                    , east: {direction: "right"}
                    , west: {direction: "left"}
                }
                , scale: {
                    all: {duration: "fast"}
                }
                // these are not recommended, but can be used
                , blind: {}
                , clip: {}
                , explode: {}
                , fade: {}
                , fold: {}
                , puff: {}

                // Pane Resize Animations
                , size: {
                    all: {easing: "swing"}
                }
            }

            // INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
            , config: {
                optionRootKeys: "effects,panes,north,south,west,east,center".split(",")
                , allPanes: "north,south,west,east,center".split(",")
                , borderPanes: "north,south,west,east".split(",")
                , oppositeEdge: {
                    north: "south"
                    , south: "north"
                    , east: "west"
                    , west: "east"
                }
                // offscreen data
                , offscreenCSS: {left: "-99999px", right: "auto"} // used by hide/close if useOffscreenClose=true
                , offscreenReset: "offscreenReset" // key used for data
                // CSS used in multiple places
                , hidden: {visibility: "hidden"}
                , visible: {visibility: "visible"}
                // layout element settings
                , resizers: {
                    cssReq: {
                        position: "absolute"
                        , padding: 0
                        , margin: 0
                        , fontSize: "1px"
                        , textAlign: "left" // to counter-act "center" alignment!
                        , overflow: "hidden" // prevent toggler-button from overflowing
                        // SEE $.layout.defaults.zIndexes.resizer_normal
                    }
                    , cssDemo: {// DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                        background: "#DDD"
                        , border: "none"
                    }
                }
                , togglers: {
                    cssReq: {
                        position: "absolute"
                        , display: "block"
                        , padding: 0
                        , margin: 0
                        , overflow: "hidden"
                        , textAlign: "center"
                        , fontSize: "1px"
                        , cursor: "pointer"
                        , zIndex: 1
                    }
                    , cssDemo: {// DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                        background: "#AAA"
                    }
                }
                , content: {
                    cssReq: {
                        position: "relative" /* contain floated or positioned elements */
                    }
                    , cssDemo: {// DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                        overflow: "auto"
                        , padding: "10px"
                    }
                    , cssDemoPane: {// DEMO CSS - REMOVE scrolling from 'pane' when it has a content-div
                        overflow: "hidden"
                        , padding: 0
                    }
                }
                , panes: {// defaults for ALL panes - overridden by 'per-pane settings' below
                    cssReq: {
                        position: "absolute"
                        , margin: 0
                        // $.layout.defaults.zIndexes.pane_normal
                    }
                    , cssDemo: {// DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                        padding: "10px"
                        , background: "#FFF"
                        , border: "1px solid #BBB"
                        , overflow: "auto"
                    }
                }
                , north: {
                    side: "top"
                    , sizeType: "Height"
                    , dir: "horz"
                    , cssReq: {
                        top: 0
                        , bottom: "auto"
                        , left: 0
                        , right: 0
                        , width: "auto"
                        // height:  DYNAMIC
                    }
                }
                , south: {
                    side: "bottom"
                    , sizeType: "Height"
                    , dir: "horz"
                    , cssReq: {
                        top: "auto"
                        , bottom: 0
                        , left: 0
                        , right: 0
                        , width: "auto"
                        // height:  DYNAMIC
                    }
                }
                , east: {
                    side: "right"
                    , sizeType: "Width"
                    , dir: "vert"
                    , cssReq: {
                        left: "auto"
                        , right: 0
                        , top: "auto" // DYNAMIC
                        , bottom: "auto" // DYNAMIC
                        , height: "auto"
                        // width:   DYNAMIC
                    }
                }
                , west: {
                    side: "left"
                    , sizeType: "Width"
                    , dir: "vert"
                    , cssReq: {
                        left: 0
                        , right: "auto"
                        , top: "auto" // DYNAMIC
                        , bottom: "auto" // DYNAMIC
                        , height: "auto"
                        // width:   DYNAMIC
                    }
                }
                , center: {
                    dir: "center"
                    , cssReq: {
                        left: "auto" // DYNAMIC
                        , right: "auto" // DYNAMIC
                        , top: "auto" // DYNAMIC
                        , bottom: "auto" // DYNAMIC
                        , height: "auto"
                        , width: "auto"
                    }
                }
            }

            // CALLBACK FUNCTION NAMESPACE - used to store reusable callback functions
            , callbacks: {}

            , getParentPaneElem: function (el) {
                // must pass either a container or pane element
                var $el = $(el)
                    , layout = $el.data("layout") || $el.data("parentLayout");
                if (layout) {
                    var $cont = layout.container;
                    // see if this container is directly-nested inside an outer-pane
                    if ($cont.data("layoutPane"))
                        return $cont;
                    var $pane = $cont.closest("." + $.layout.defaults.panes.paneClass);
                    // if a pane was found, return it
                    if ($pane.data("layoutPane"))
                        return $pane;
                }
                return null;
            }

            , getParentPaneInstance: function (el) {
                // must pass either a container or pane element
                var $pane = $.layout.getParentPaneElem(el);
                return $pane ? $pane.data("layoutPane") : null;
            }

            , getParentLayoutInstance: function (el) {
                // must pass either a container or pane element
                var $pane = $.layout.getParentPaneElem(el);
                return $pane ? $pane.data("parentLayout") : null;
            }

            , getEventObject: function (evt) {
                return typeof evt === "object" && evt.stopPropagation ? evt : null;
            }
            , parsePaneName: function (evt_or_pane) {
                var evt = $.layout.getEventObject(evt_or_pane)
                    , pane = evt_or_pane;
                if (evt) {
                    // ALWAYS stop propagation of events triggered in Layout!
                    evt.stopPropagation();
                    pane = $(this).data("layoutEdge");
                }
                if (pane && !/^(west|east|north|south|center)$/.test(pane)) {
                    $.layout.msg('LAYOUT ERROR - Invalid pane-name: "' + pane + '"');
                    pane = "error";
                }
                return pane;
            }


            // LAYOUT-PLUGIN REGISTRATION
            // more plugins can added beyond this default list
            , plugins: {
                draggable: !!$.fn.draggable // resizing
                , effects: {
                    core: !!$.effects  // animimations (specific effects tested by initOptions)
                    , slide: $.effects && ($.effects.slide || ($.effects.effect && $.effects.effect.slide)) // default effect
                }
            }

// arrays of plugin or other methods to be triggered for events in *each layout* - will be passed 'Instance'
            , onCreate: [] // runs when layout is just starting to be created - right after options are set
            , onLoad: [] // runs after layout container and global events init, but before initPanes is called
            , onReady: [] // runs after initialization *completes* - ie, after initPanes completes successfully
            , onDestroy: [] // runs after layout is destroyed
            , onUnload: [] // runs after layout is destroyed OR when page unloads
            , afterOpen: [] // runs after setAsOpen() completes
            , afterClose: [] // runs after setAsClosed() completes

            /*
                 * GENERIC UTILITY METHODS
                 */

            // calculate and return the scrollbar width, as an integer
            , scrollbarWidth: function () {
                return window.scrollbarWidth || $.layout.getScrollbarSize('width');
            }
            , scrollbarHeight: function () {
                return window.scrollbarHeight || $.layout.getScrollbarSize('height');
            }
            , getScrollbarSize: function (dim) {
                var $c = $('<div style="position: absolute; top: -10000px; left: -10000px; width: 100px; height: 100px; border: 0; overflow: scroll;"></div>').appendTo("body")
                    , d = {width: $c.outerWidth - $c[0].clientWidth, height: 100 - $c[0].clientHeight};
                $c.remove();
                window.scrollbarWidth = d.width;
                window.scrollbarHeight = d.height;
                return dim.match(/^(width|height)$/) ? d[dim] : d;
            }


            , disableTextSelection: function () {
                var $d = $(document)
                    , s = 'textSelectionDisabled'
                    , x = 'textSelectionInitialized'
                ;
                if ($.fn.disableSelection) {
                    if (!$d.data(x)) // document hasn't been initialized yet
                        $d.on('mouseup', $.layout.enableTextSelection).data(x, true);
                    if (!$d.data(s))
                        $d.disableSelection().data(s, true);
                }
            }
            , enableTextSelection: function () {
                var $d = $(document)
                    , s = 'textSelectionDisabled';
                if ($.fn.enableSelection && $d.data(s))
                    $d.enableSelection().data(s, false);
            }


            /**
             * Returns hash container 'display' and 'visibility'
             *
             * @see $.swap() - swaps CSS, runs callback, resets CSS
             * @param  {!Object}  $E    jQuery element
             * @param  {boolean=} [force=false] Run even if display != none
             * @return {!Object}      Returns current style props, if applicable
             */
            , showInvisibly: function ($E, force) {
                if ($E && $E.length && (force || $E.css("display") === "none")) { // only if not *already hidden*
                    var s = $E[0].style
                        // save ONLY the 'style' props because that is what we must restore
                        , CSS = {display: s.display || '', visibility: s.visibility || ''};
                    // show element 'invisibly' so can be measured
                    $E.css({display: "block", visibility: "hidden"});
                    return CSS;
                }
                return {};
            }

            /**
             * Returns data for setting size of an element (container or a pane).
             *
             * @see  _create(), onWindowResize() for container, plus others for pane
             * @return JSON  Returns a hash of all dimensions: top, bottom, left, right, outerWidth, innerHeight, etc
             */
            , getElementDimensions: function ($E, inset) {
                var
                    // dimensions hash - start with current data IF passed
                    d = {css: {}, inset: {}}
                    , x = d.css   // CSS hash
                    , i = {bottom: 0} // TEMP insets (bottom = complier hack)
                    , N = $.layout.cssNum
                    , R = Math.round
                    , off = $E.offset()
                    , b, p, ei   // TEMP border, padding
                ;
                d.offsetLeft = off.left;
                d.offsetTop = off.top;

                if (!inset)
                    inset = {}; // simplify logic below

                $.each("Left,Right,Top,Bottom".split(","), function (idx, e) { // e = edge
                    b = x["border" + e] = $.layout.borderWidth($E, e);
                    p = x["padding" + e] = $.layout.cssNum($E, "padding" + e);
                    ei = e.toLowerCase();
                    d.inset[ei] = inset[ei] >= 0 ? inset[ei] : p; // any missing insetX value = paddingX
                    i[ei] = d.inset[ei] + b; // total offset of content from outer side
                });

                x.width = R($E.width());
                x.height = R($E.height());
                x.top = N($E, "top", true);
                x.bottom = N($E, "bottom", true);
                x.left = N($E, "left", true);
                x.right = N($E, "right", true);

                d.outerWidth = R($E.outerWidth());
                d.outerHeight = R($E.outerHeight());
                // calc the TRUE inner-dimensions, even in quirks-mode!
                d.innerWidth = max(0, d.outerWidth - i.left - i.right);
                d.innerHeight = max(0, d.outerHeight - i.top - i.bottom);
                // layoutWidth/Height is used in calcs for manual resizing
                // layoutW/H only differs from innerW/H when in quirks-mode - then is like outerW/H
                d.layoutWidth = R($E.innerWidth());
                d.layoutHeight = R($E.innerHeight());

                //if ($E.prop('tagName') === 'BODY') { debugData( d, $E.prop('tagName') ); } // DEBUG

                //d.visible = $E.is(":visible");// && x.width > 0 && x.height > 0;

                return d;
            }

            , getElementStyles: function ($E, list) {
                var
                    CSS = {}
                    , style = $E[0].style
                    , props = list.split(",")
                    , sides = "Top,Bottom,Left,Right".split(",")
                    , attrs = "Color,Style,Width".split(",")
                    , p, s, a, i, j, k
                ;
                for (i = 0; i < props.length; i++) {
                    p = props[i];
                    if (p.match(/(border|padding|margin)$/))
                        for (j = 0; j < 4; j++) {
                            s = sides[j];
                            if (p === "border")
                                for (k = 0; k < 3; k++) {
                                    a = attrs[k];
                                    CSS[p + s + a] = style[p + s + a];
                                }
                            else
                                CSS[p + s] = style[p + s];
                        }
                    else
                        CSS[p] = style[p];
                }
                return CSS
            }

            /**
             * Return the innerWidth for the current browser/doctype
             *
             * @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
             * @param  {Array.<Object>} $E  Must pass a jQuery object - first element is processed
             * @param  {number=}   outerWidth (optional) Can pass a width, allowing calculations BEFORE element is resized
             * @return {number}   Returns the innerWidth of the elem by subtracting padding and borders
             */
            , cssWidth: function ($E, outerWidth) {
                // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
                if (outerWidth <= 0)
                    return 0;

                var lb = $.layout.browser
                    , bs = !lb.boxModel ? "border-box" : lb.boxSizing ? $E.css("boxSizing") : "content-box"
                    , b = $.layout.borderWidth
                    , n = $.layout.cssNum
                    , W = outerWidth
                ;
                // strip border and/or padding from outerWidth to get CSS Width
                if (bs !== "border-box")
                    W -= (b($E, "Left") + b($E, "Right"));
                if (bs === "content-box")
                    W -= (n($E, "paddingLeft") + n($E, "paddingRight"));
                return max(0, W);
            }

            /**
             * Return the innerHeight for the current browser/doctype
             *
             * @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
             * @param  {Array.<Object>} $E  Must pass a jQuery object - first element is processed
             * @param  {number=}   outerHeight  (optional) Can pass a width, allowing calculations BEFORE element is resized
             * @return {number}   Returns the innerHeight of the elem by subtracting padding and borders
             */
            , cssHeight: function ($E, outerHeight) {
                // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
                if (outerHeight <= 0)
                    return 0;

                var lb = $.layout.browser
                    , bs = !lb.boxModel ? "border-box" : lb.boxSizing ? $E.css("boxSizing") : "content-box"
                    , b = $.layout.borderWidth
                    , n = $.layout.cssNum
                    , H = outerHeight
                ;
                // strip border and/or padding from outerHeight to get CSS Height
                if (bs !== "border-box")
                    H -= (b($E, "Top") + b($E, "Bottom"));
                if (bs === "content-box")
                    H -= (n($E, "paddingTop") + n($E, "paddingBottom"));
                return max(0, H);
            }

            /**
             * Returns the 'current CSS numeric value' for a CSS property - 0 if property does not exist
             *
             * @see  Called by many methods
             * @param {Array.<Object>} $E     Must pass a jQuery object - first element is processed
             * @param {string}   prop    The name of the CSS property, eg: top, width, etc.
             * @param {boolean=}   [allowAuto=false] true = return 'auto' if that is value; false = return 0
             * @return {(string|number)}      Usually used to get an integer value for position (top, left) or size (height, width)
             */
            , cssNum: function ($E, prop, allowAuto) {
                if (!$E.jquery)
                    $E = $($E);
                var CSS = $.layout.showInvisibly($E)
                    , p = $.css($E[0], prop, true)
                    , v = allowAuto && p == "auto" ? p : Math.round(parseFloat(p) || 0);
                $E.css(CSS); // RESET
                return v;
            }

            , borderWidth: function (el, side) {
                if (el.jquery)
                    el = el[0];
                var b = "border" + side.substr(0, 1).toUpperCase() + side.substr(1); // left => Left
                return $.css(el, b + "Style", true) === "none" ? 0 : Math.round(parseFloat($.css(el, b + "Width", true)) || 0);
            }

            /**
             * Mouse-tracking utility - FUTURE REFERENCE
             *
             * init: if (!window.mouse) {
         *   window.mouse = { x: 0, y: 0 };
         *   $(document).mousemove( $.layout.trackMouse );
         *  }
             *
             * @param {Object}  evt
             *
             , trackMouse: function (evt) {
         window.mouse = { x: evt.clientX, y: evt.clientY };
         }
             */

            /**
             * SUBROUTINE for preventPrematureSlideClose option
             *
             * @param {Object}  evt
             * @param {Object=}  el
             */
            , isMouseOverElem: function (evt, el) {
                var
                    $E = $(el || this)
                    , d = $E.offset()
                    , T = d.top
                    , L = d.left
                    , R = L + $E.outerWidth()
                    , B = T + $E.outerHeight()
                    , x = evt.pageX // evt.clientX ?
                    , y = evt.pageY // evt.clientY ?
                ;
                // if X & Y are < 0, probably means is over an open SELECT
                return ($.layout.browser.msie && x < 0 && y < 0) || ((x >= L && x <= R) && (y >= T && y <= B));
            }

            /**
             * Message/Logging Utility
             *
             * @example $.layout.msg("My message");    // log text
             * @example $.layout.msg("My message", true);  // alert text
             * @example $.layout.msg({ foo: "bar" }, "Title"); // log hash-data, with custom title
             * @example $.layout.msg({ foo: "bar" }, true, "Title", { sort: false }); -OR-
             * @example $.layout.msg({ foo: "bar" }, "Title", { sort: false, display: true }); // alert hash-data
             *
             * @param {(Object|string)}   info   String message OR Hash/Array
             * @param {(Boolean|string|Object)=} [popup=false] True means alert-box - can be skipped
             * @param {(Object|string)=}   [debugTitle=""] Title for Hash data - can be skipped
             * @param {Object=}     [debugOpts]  Extra options for debug output
             */
            , msg: function (info, popup, debugTitle, debugOpts) {
                if ($.isPlainObject(info) && window.debugData) {
                    if (typeof popup === "string") {
                        debugOpts = debugTitle;
                        debugTitle = popup;
                    } else if (typeof debugTitle === "object") {
                        debugOpts = debugTitle;
                        debugTitle = null;
                    }
                    var t = debugTitle || "log( <object> )"
                        , o = $.extend({sort: false, returnHTML: false, display: false}, debugOpts);
                    if (popup === true || o.display)
                        debugData(info, t, o);
                    else if (window.console)
                        console.log(debugData(info, t, o));
                } else if (popup)
                    alert(info);
                else if (window.console)
                    console.log(info);
                else {
                    var id = "#layoutLogger"
                        , $l = $(id);
                    if (!$l.length)
                        $l = createLog();
                    $l.children("ul").append('<li style="padding: 4px 10px; margin: 0; border-top: 1px solid #CCC;">' + info.replace(/\</g, "&lt;").replace(/\>/g, "&gt;") + '</li>');
                }

                function createLog() {
                    var pos = $.support.fixedPosition ? 'fixed' : 'absolute'
                        , $e = $('<div id="layoutLogger" style="position: ' + pos + '; top: 5px; z-index: 999999; max-width: 25%; overflow: hidden; border: 1px solid #000; border-radius: 5px; background: #FBFBFB; box-shadow: 0 2px 10px rgba(0,0,0,0.3);">'
                        + '<div style="font-size: 13px; font-weight: bold; padding: 5px 10px; background: #F6F6F6; border-radius: 5px 5px 0 0; cursor: move;">'
                        + '<span style="float: right; padding-left: 7px; cursor: pointer;" title="Remove Console" onclick="$(this).closest(\'#layoutLogger\').remove()">X</span>Layout console.log</div>'
                        + '<ul style="font-size: 13px; font-weight: none; list-style: none; margin: 0; padding: 0 0 2px;"></ul>'
                        + '</div>'
                    ).appendTo("body");
                    $e.css('left', $(window).width() - $e.outerWidth() - 5);
                    if ($.ui.draggable)
                        $e.draggable({handle: ':first-child'});
                    return $e;
                }
            }

        };


        /*
     * $.layout.browser REPLACES removed $.browser, with extra data
     * Parsing code here adapted from jQuery 1.8 $.browse
     */
        (function () {
            var u = navigator.userAgent.toLowerCase()
                , m = /(chrome)[ \/]([\w.]+)/.exec(u)
                || /(webkit)[ \/]([\w.]+)/.exec(u)
                || /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(u)
                || /(msie) ([\w.]+)/.exec(u)
                || u.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(u)
                || []
                , b = m[1] || ""
                , v = m[2] || 0
                , ie = b === "msie"
                , cm = document.compatMode
                , $s = $.support
                , bs = $s.boxSizing !== undefined ? $s.boxSizing : $s.boxSizingReliable
                , bm = !ie || !cm || cm === "CSS1Compat" || $s.boxModel || false
                , lb = $.layout.browser = {
                version: v
                , safari: b === "webkit" // webkit (NOT chrome) = safari
                , webkit: b === "chrome" // chrome = webkit
                , msie: ie
                , isIE6: ie && v == 6
                // ONLY IE reverts to old box-model - Note that compatMode was deprecated as of IE8
                , boxModel: bm
                , boxSizing: !!(typeof bs === "function" ? bs() : bs)
            };
            if (b)
                lb[b] = true; // set CURRENT browser
            /* OLD versions of jQuery only set $.support.boxModel after page is loaded
         * so if this is IE, use support.boxModel to test for quirks-mode (ONLY IE changes boxModel) */
            if (!bm && !cm)
                $(function () {
                    lb.boxModel = $s.boxModel;
                });
        })();


// DEFAULT OPTIONS
        $.layout.defaults = {
            /*
         * LAYOUT & LAYOUT-CONTAINER OPTIONS
         * - none of these options are applicable to individual panes
         */
            name: ""   // Not required, but useful for buttons and used for the state-cookie
            , containerClass: "ui-layout-container" // layout-container element
            , inset: null  // custom container-inset values (override padding)
            , scrollToBookmarkOnLoad: true  // after creating a layout, scroll to bookmark in URL (.../page.htm#myBookmark)
            , resizeWithWindow: true  // bind thisLayout.resizeAll() to the window.resize event
            , resizeWithWindowDelay: 200   // delay calling resizeAll because makes window resizing very jerky
            , resizeWithWindowMaxDelay: 0   // 0 = none - force resize every XX ms while window is being resized
            , maskPanesEarly: false  // true = create pane-masks on resizer.mouseDown instead of waiting for resizer.dragstart
            , onresizeall_start: null  // CALLBACK when resizeAll() STARTS - NOT pane-specific
            , onresizeall_end: null  // CALLBACK when resizeAll() ENDS - NOT pane-specific
            , onload_start: null  // CALLBACK when Layout inits - after options initialized, but before elements
            , onload_end: null  // CALLBACK when Layout inits - after EVERYTHING has been initialized
            , onunload_start: null  // CALLBACK when Layout is destroyed OR onWindowUnload
            , onunload_end: null  // CALLBACK when Layout is destroyed OR onWindowUnload
            , initPanes: true  // false = DO NOT initialize the panes onLoad - will init later
            , showErrorMessages: true  // enables fatal error messages to warn developers of common errors
            , showDebugMessages: false  // display console-and-alert debug msgs - IF this Layout version _has_ debugging code!
// Changing this zIndex value will cause other zIndex values to automatically change
            , zIndex: null  // the PANE zIndex - resizers and masks will be +1
// DO NOT CHANGE the zIndex values below unless you clearly understand their relationships
            , zIndexes: {// set _default_ z-index values here...
                pane_normal: 0   // normal z-index for panes
                , content_mask: 1   // applied to overlays used to mask content INSIDE panes during resizing
                , resizer_normal: 2   // normal z-index for resizer-bars
                , pane_sliding: 100   // applied to *BOTH* the pane and its resizer when a pane is 'slid open'
                , pane_animate: 1000  // applied to the pane when being animated - not applied to the resizer
                , resizer_drag: 10000  // applied to the CLONED resizer-bar when being 'dragged'
            }
            , errors: {
                pane: "pane"  // description of "layout pane element" - used only in error messages
                , selector: "selector" // description of "jQuery-selector" - used only in error messages
                , addButtonError: "Error Adding Button\nInvalid "
                , containerMissing: "UI Layout Initialization Error\nThe specified layout-container does not exist."
                , centerPaneMissing: "UI Layout Initialization Error\nThe center-pane element does not exist.\nThe center-pane is a required element."
                , noContainerHeight: "UI Layout Initialization Warning\nThe layout-container \"CONTAINER\" has no height.\nTherefore the layout is 0-height and hence 'invisible'!"
                , callbackError: "UI Layout Callback Error\nThe EVENT callback is not a valid function."
            }
            /*
         * PANE DEFAULT SETTINGS
         * - settings under the 'panes' key become the default settings for *all panes*
         * - ALL pane-options can also be set specifically for each panes, which will override these 'default values'
         */
            , panes: {// default options for 'all panes' - will be overridden by 'per-pane settings'
                applyDemoStyles: false  // NOTE: renamed from applyDefaultStyles for clarity

                //Add responsiveness
                , responsive:
                    {
                        enabled: false,
                        when: 'md'
                        , sizes: {
                            xl: 1140,
                            lg: 992,
                            md: 768,
                            sm: 576,
                            xs: 0
                        }
                    }
                , closable: true  // pane can open & close
                , resizable: true  // when open, pane can be resized
                , slidable: true  // when closed, pane can 'slide open' over other panes - closes on mouse-out
                , initClosed: false  // true = init pane as 'closed'
                , initHidden: false   // true = init pane as 'hidden' - no resizer-bar/spacing
                // SELECTORS
                //, paneSelector:   ""   // MUST be pane-specific - jQuery selector for pane
                , contentSelector: ".ui-layout-content" // INNER div/element to auto-size so only it scrolls, not the entire pane!
                , contentIgnoreSelector: ".ui-layout-ignore" // element(s) to 'ignore' when measuring 'content'
                , findNestedContent: false  // true = $P.find(contentSelector), false = $P.children(contentSelector)
                // GENERIC ROOT-CLASSES - for auto-generated classNames
                , paneClass: "ui-layout-pane" // Layout Pane
                , resizerClass: "ui-layout-resizer" // Resizer Bar
                , togglerClass: "ui-layout-toggler" // Toggler Button
                , buttonClass: "ui-layout-button" // CUSTOM Buttons - eg: '[ui-layout-button]-toggle/-open/-close/-pin'
                // ELEMENT SIZE & SPACING
                //, size:     100   // MUST be pane-specific -initial size of pane
                , minSize: 0   // when manually resizing a pane
                , maxSize: 0   // ditto, 0 = no limit
                , spacing_open: 6   // space between pane and adjacent panes - when pane is 'open'
                , spacing_closed: 6   // ditto - when pane is 'closed'
                , togglerLength_open: 50   // Length = WIDTH of toggler button on north/south sides - HEIGHT on east/west sides
                , togglerLength_closed: 50   // 100% OR -1 means 'full height/width of resizer bar' - 0 means 'hidden'
                , togglerAlign_open: "center" // top/left, bottom/right, center, OR...
                , togglerAlign_closed: "center" // 1 => nn = offset from top/left, -1 => -nn == offset from bottom/right
                , togglerContent_open: ""   // text or HTML to put INSIDE the toggler
                , togglerContent_closed: ""   // ditto
                // RESIZING OPTIONS
                , resizerDblClickToggle: true  //
                , autoResize: true  // IF size is 'auto' or a percentage, then recalc 'pixel size' whenever the layout resizes
                , autoReopen: true  // IF a pane was auto-closed due to noRoom, reopen it when there is room? False = leave it closed
                , resizerDragOpacity: 1   // option for ui.draggable
                //, resizerCursor:   ""   // MUST be pane-specific - cursor when over resizer-bar
                , maskContents: false  // true = add DIV-mask over-or-inside this pane so can 'drag' over IFRAMES
                , maskObjects: false  // true = add IFRAME-mask over-or-inside this pane to cover objects/applets - content-mask will overlay this mask
                , maskZindex: null  // will override zIndexes.content_mask if specified - not applicable to iframe-panes
                , resizingGrid: false  // grid size that the resizers will snap-to during resizing, eg: [20,20]
                , livePaneResizing: false  // true = LIVE Resizing as resizer is dragged
                , liveContentResizing: false  // true = re-measure header/footer heights as resizer is dragged
                , liveResizingTolerance: 1   // how many px change before pane resizes, to control performance
                // SLIDING OPTIONS
                , sliderCursor: "pointer" // cursor when resizer-bar will trigger 'sliding'
                , slideTrigger_open: "click"  // click, dblclick, mouseenter
                , slideTrigger_close: "mouseleave"// click, mouseleave
                , slideDelay_open: 300   // applies only for mouseenter event - 0 = instant open
                , slideDelay_close: 300   // applies only for mouseleave event (300ms is the minimum!)
                , hideTogglerOnSlide: false  // when pane is slid-open, should the toggler show?
                , preventQuickSlideClose: $.layout.browser.webkit // Chrome triggers slideClosed as it is opening
                , preventPrematureSlideClose: false // handle incorrect mouseleave trigger, like when over a SELECT-list in IE
                // PANE-SPECIFIC TIPS & MESSAGES
                , tips: {
                    Open: "Open"  // eg: "Open Pane"
                    , Close: "Close"
                    , Resize: "Resize"
                    , Slide: "Slide Open"
                    , Pin: "Pin"
                    , Unpin: "Un-Pin"
                    , noRoomToOpen: "Not enough room to show this panel." // alert if user tries to open a pane that cannot
                    , minSizeWarning: "Panel has reached its minimum size" // displays in browser statusbar
                    , maxSizeWarning: "Panel has reached its maximum size" // ditto
                }
                // HOT-KEYS & MISC
                , showOverflowOnHover: false  // will bind allowOverflow() utility to pane.onMouseOver
                , enableCursorHotkey: true  // enabled 'cursor' hotkeys
                //, customHotkey:   ""   // MUST be pane-specific - EITHER a charCode OR a character
                , customHotkeyModifier: "SHIFT"  // either 'SHIFT', 'CTRL' or 'CTRL+SHIFT' - NOT 'ALT'
                // PANE ANIMATION
                // NOTE: fxSss_open, fxSss_close & fxSss_size options (eg: fxName_open) are auto-generated if not passed
                , fxName: "slide"  // ('none' or blank), slide, drop, scale -- only relevant to 'open' & 'close', NOT 'size'
                , fxSpeed: null  // slow, normal, fast, 200, nnn - if passed, will OVERRIDE fxSettings.duration
                , fxSettings: {}   // can be passed, eg: { easing: "easeOutBounce", duration: 1500 }
                , fxOpacityFix: true  // tries to fix opacity in IE to restore anti-aliasing after animation
                , animatePaneSizing: false  // true = animate resizing after dragging resizer-bar OR sizePane() is called
                /*  NOTE: Action-specific FX options are auto-generated from the options above if not specifically set:
                     fxName_open:   "slide"  // 'Open' pane animation
                     fnName_close:   "slide"  // 'Close' pane animation
                     fxName_size:   "slide"  // 'Size' pane animation - when animatePaneSizing = true
                     fxSpeed_open:   null
                     fxSpeed_close:   null
                     fxSpeed_size:   null
                     fxSettings_open:  {}
                     fxSettings_close:  {}
                     fxSettings_size:  {}
                     */
                // CHILD/NESTED LAYOUTS
                , children: null  // Layout-options for nested/child layout - even {} is valid as options
                , containerSelector: ''   // if child is NOT 'directly nested', a selector to find it/them (can have more than one child layout!)
                , initChildren: true  // true = child layout will be created as soon as _this_ layout completes initialization
                , destroyChildren: true  // true = destroy child-layout if this pane is destroyed
                , resizeChildren: true  // true = trigger child-layout.resizeAll() when this pane is resized
                // EVENT TRIGGERING
                , triggerEventsOnLoad: false  // true = trigger onopen OR onclose callbacks when layout initializes
                , triggerEventsDuringLiveResize: true // true = trigger onresize callback REPEATEDLY if livePaneResizing==true
                // PANE CALLBACKS
                , onshow_start: null  // CALLBACK when pane STARTS to Show - BEFORE onopen/onhide_start
                , onshow_end: null  // CALLBACK when pane ENDS being Shown - AFTER  onopen/onhide_end
                , onhide_start: null  // CALLBACK when pane STARTS to Close - BEFORE onclose_start
                , onhide_end: null  // CALLBACK when pane ENDS being Closed - AFTER  onclose_end
                , onopen_start: null  // CALLBACK when pane STARTS to Open
                , onopen_end: null  // CALLBACK when pane ENDS being Opened
                , onclose_start: null  // CALLBACK when pane STARTS to Close
                , onclose_end: null  // CALLBACK when pane ENDS being Closed
                , onresize_start: null  // CALLBACK when pane STARTS being Resized ***FOR ANY REASON***
                , onresize_end: function () {
                }  // CALLBACK when pane ENDS being Resized ***FOR ANY REASON***
                , onsizecontent_start: null  // CALLBACK when sizing of content-element STARTS
                , onsizecontent_end: null  // CALLBACK when sizing of content-element ENDS
                , onswap_start: null  // CALLBACK when pane STARTS to Swap
                , onswap_end: null  // CALLBACK when pane ENDS being Swapped
                , ondrag_start: null  // CALLBACK when pane STARTS being ***MANUALLY*** Resized
                , ondrag_end: null  // CALLBACK when pane ENDS being ***MANUALLY*** Resized
            }
            /*
         * PANE-SPECIFIC SETTINGS
         * - options listed below MUST be specified per-pane - they CANNOT be set under 'panes'
         * - all options under the 'panes' key can also be set specifically for any pane
         * - most options under the 'panes' key apply only to 'border-panes' - NOT the the center-pane
         */
            , north: {
                paneSelector: ".ui-layout-north"
                , size: "auto"  // eg: "auto", "30%", .30, 200
                , resizerCursor: "n-resize" // custom = url(myCursor.cur)
                , customHotkey: ""   // EITHER a charCode (43) OR a character ("o")
            }
            , south: {
                paneSelector: ".ui-layout-south"
                , size: "auto"
                , resizerCursor: "s-resize"
                , customHotkey: ""
            }
            , east: {
                paneSelector: ".ui-layout-east"
                , size: 200
                , resizerCursor: "e-resize"
                , customHotkey: ""
            }
            , west: {
                paneSelector: ".ui-layout-west"
                , size: 200
                , resizerCursor: "w-resize"
                , customHotkey: ""
            }
            , center: {
                paneSelector: ".ui-layout-center"
                , minWidth: 0
                , minHeight: 0
            }
        };

        $.layout.optionsMap = {
            // layout/global options - NOT pane-options
            layout: ("name,instanceKey,stateManagement,effects,inset,zIndexes,errors,"
                + "zIndex,scrollToBookmarkOnLoad,showErrorMessages,maskPanesEarly,"
                + "outset,resizeWithWindow,resizeWithWindowDelay,resizeWithWindowMaxDelay,"
                + "onresizeall,onresizeall_start,onresizeall_end,onload,onload_start,onload_end,onunload,onunload_start,onunload_end").split(",")
// borderPanes: [ ALL options that are NOT specified as 'layout' ]
            // default.panes options that apply to the center-pane (most options apply _only_ to border-panes)
            , center: ("paneClass,contentSelector,contentIgnoreSelector,findNestedContent,applyDemoStyles,triggerEventsOnLoad,"
                + "showOverflowOnHover,maskContents,maskObjects,liveContentResizing,"
                + "containerSelector,children,initChildren,resizeChildren,destroyChildren,"
                + "onresize,onresize_start,onresize_end,onsizecontent,onsizecontent_start,onsizecontent_end").split(",")
            // options that MUST be specifically set 'per-pane' - CANNOT set in the panes (defaults) key
            , noDefault: ("paneSelector,resizerCursor,customHotkey").split(",")
        };

        /**
         * Processes options passed in converts flat-format data into subkey (JSON) format
         * In flat-format, subkeys are _currently_ separated with 2 underscores, like north__optName
         * Plugins may also call this method so they can transform their own data
         *
         * @param  {!Object} hash   Data/options passed by user - may be a single level or nested levels
         * @param  {boolean=} [addKeys=false] Should the primary layout.options keys be added if they do not exist?
         * @return {Object}      Returns hash of minWidth & minHeight
         */
        $.layout.transformData = function (hash, addKeys) {
            var json = addKeys ? {panes: {}, center: {}} : {} // init return object
                , branch, optKey, keys, key, val, i, c;

            if (typeof hash !== "object")
                return json; // no options passed

            // convert all 'flat-keys' to 'sub-key' format
            for (optKey in hash) {
                branch = json;
                val = hash[optKey];
                keys = optKey.split("__"); // eg: west__size or north__fxSettings__duration
                c = keys.length - 1;
                // convert underscore-delimited to subkeys
                for (i = 0; i <= c; i++) {
                    key = keys[i];
                    if (i === c) { // last key = value
                        if ($.isPlainObject(val))
                            branch[key] = $.layout.transformData(val); // RECURSE
                        else
                            branch[key] = val;
                    } else {
                        if (!branch[key])
                            branch[key] = {}; // create the subkey
                        // recurse to sub-key for next loop - if not done
                        branch = branch[key];
                    }
                }
            }
            return json;
        };

// INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
        $.layout.backwardCompatibility = {
            // data used by renameOldOptions()
            map: {
                // OLD Option Name:   NEW Option Name
                applyDefaultStyles: "applyDemoStyles"
                // CHILD/NESTED LAYOUTS
                , childOptions: "children"
                , initChildLayout: "initChildren"
                , destroyChildLayout: "destroyChildren"
                , resizeChildLayout: "resizeChildren"
                , resizeNestedLayout: "resizeChildren"
                // MISC Options
                , resizeWhileDragging: "livePaneResizing"
                , resizeContentWhileDragging: "liveContentResizing"
                , triggerEventsWhileDragging: "triggerEventsDuringLiveResize"
                , maskIframesOnResize: "maskContents"
                // STATE MANAGEMENT
                , useStateCookie: "stateManagement.enabled"
                , "cookie.autoLoad": "stateManagement.autoLoad"
                , "cookie.autoSave": "stateManagement.autoSave"
                , "cookie.keys": "stateManagement.stateKeys"
                , "cookie.name": "stateManagement.cookie.name"
                , "cookie.domain": "stateManagement.cookie.domain"
                , "cookie.path": "stateManagement.cookie.path"
                , "cookie.expires": "stateManagement.cookie.expires"
                , "cookie.secure": "stateManagement.cookie.secure"
                // OLD Language options
                , noRoomToOpenTip: "tips.noRoomToOpen"
                , togglerTip_open: "tips.Close" // open   = Close
                , togglerTip_closed: "tips.Open"  // closed = Open
                , resizerTip: "tips.Resize"
                , sliderTip: "tips.Slide"
            }

            /**
             * @param {Object} opts
             */
            , renameOptions: function (opts) {
                var map = $.layout.backwardCompatibility.map
                    , oldData, newData, value
                ;
                for (var itemPath in map) {
                    oldData = getBranch(itemPath);
                    value = oldData.branch[oldData.key];
                    if (value !== undefined) {
                        newData = getBranch(map[itemPath], true);
                        newData.branch[newData.key] = value;
                        delete oldData.branch[oldData.key];
                    }
                }

                /**
                 * @param {string} path
                 * @param {boolean=} [create=false] Create path if does not exist
                 */
                function getBranch(path, create) {
                    var a = path.split(".") // split keys into array
                        , c = a.length - 1
                        , D = {branch: opts, key: a[c]} // init branch at top & set key (last item)
                        , i = 0, k, undef;
                    for (; i < c; i++) { // skip the last key (data)
                        k = a[i];
                        if (D.branch[k] === undefined) { // child-key does not exist
                            if (create) {
                                D.branch = D.branch[k] = {}; // create child-branch
                            } else // can't go any farther
                                D.branch = {}; // branch is undefined
                        } else
                            D.branch = D.branch[k]; // get child-branch
                    }
                    return D;
                }
            }

            /**
             * @param {Object} opts
             */
            , renameAllOptions: function (opts) {
                var ren = $.layout.backwardCompatibility.renameOptions;
                // rename root (layout) options
                ren(opts);
                // rename 'defaults' to 'panes'
                if (opts.defaults) {
                    if (typeof opts.panes !== "object")
                        opts.panes = {};
                    $.extend(true, opts.panes, opts.defaults);
                    delete opts.defaults;
                }
                // rename options in the the options.panes key
                if (opts.panes)
                    ren(opts.panes);
                // rename options inside *each pane key*, eg: options.west
                $.each($.layout.config.allPanes, function (i, pane) {
                    if (opts[pane])
                        ren(opts[pane]);
                });
                return opts;
            }
        };


        /* ============================================================
     * BEGIN WIDGET: $( selector ).layout( {options} );
     * ============================================================
     */
        $.fn.layout = function (opts) {
            var
                // local aliases to global data
                browser = $.layout.browser
                , _c = $.layout.config

                // local aliases to utlity methods
                , cssW = $.layout.cssWidth
                , cssH = $.layout.cssHeight
                , elDims = $.layout.getElementDimensions
                , styles = $.layout.getElementStyles
                , evtObj = $.layout.getEventObject
                , evtPane = $.layout.parsePaneName

                /**
                 * options - populated by initOptions()
                 */
                , options = $.extend(true, {}, $.layout.defaults)
                , effects = options.effects = $.extend(true, {}, $.layout.effects)

                /**
                 * layout-state object
                 */
                , state = {
                    // generate unique ID to use for event.namespace so can unbind only events added by 'this layout'
                    id: "layout" + $.now() // code uses alias: sID
                    , initialized: false
                    , paneResizing: false
                    , panesSliding: {}
                    , container: {// list all keys referenced in code to avoid compiler error msgs
                        innerWidth: 0
                        , innerHeight: 0
                        , outerWidth: 0
                        , outerHeight: 0
                        , layoutWidth: 0
                        , layoutHeight: 0
                    }
                    , north: {childIdx: 0}
                    , south: {childIdx: 0}
                    , east: {childIdx: 0}
                    , west: {childIdx: 0}
                    , center: {childIdx: 0}
                }

                /**
                 * parent/child-layout pointers
                 */
//, hasParentLayout = false - exists ONLY inside Instance so can be set externally
                , children = {
                    north: null
                    , south: null
                    , east: null
                    , west: null
                    , center: null
                }

                /*
         * ###########################
         *  INTERNAL HELPER FUNCTIONS
         * ###########################
         */

                /**
                 * Manages all internal timers
                 */
                , timer = {
                    data: {}
                    , set: function (s, fn, ms) {
                        timer.clear(s);
                        timer.data[s] = setTimeout(fn, ms);
                    }
                    , clear: function (s) {
                        var t = timer.data;
                        if (t[s]) {
                            clearTimeout(t[s]);
                            delete t[s];
                        }
                    }
                }

                /**
                 * Alert or console.log a message - IF option is enabled.
                 *
                 * @param {(string|!Object)} msg    Message (or debug-data) to display
                 * @param {boolean=}   [popup=false] True by default, means 'alert', false means use console.log
                 * @param {boolean=}   [debug=false] True means is a widget debugging message
                 */
                , _log = function (msg, popup, debug) {
                    var o = options;
                    if ((o.showErrorMessages && !debug) || (debug && o.showDebugMessages))
                        $.layout.msg(o.name + ' / ' + msg, (popup !== false));
                    return false;
                }

                /**
                 * Executes a Callback function after a trigger event, like resize, open or close
                 *
                 * @param {string}    evtName     Name of the layout callback, eg "onresize_start"
                 * @param {(string|boolean)=} [pane=""]    This is passed only so we can pass the 'pane object' to the callback
                 * @param {(string|boolean)=} [skipBoundEvents=false] True = do not run events bound to the elements - only the callbacks set in options
                 */
                , _runCallbacks = function (evtName, pane, skipBoundEvents) {
                    var hasPane = pane && isStr(pane)
                        , s = hasPane ? state[pane] : state
                        , o = hasPane ? options[pane] : options
                        , lName = options.name
                        // names like onopen and onopen_end separate are interchangeable in options...
                        , lng = evtName + (evtName.match(/_/) ? "" : "_end")
                        , shrt = lng.match(/_end$/) ? lng.substr(0, lng.length - 4) : ""
                        , fn = o[lng] || o[shrt]
                        , retVal = "NC" // NC = No Callback
                        , args = []
                        , $P = hasPane ? $Ps[pane] : 0
                    ;
                    if (hasPane && !$P) // a pane is specified, but does not exist!
                        return retVal;
                    if (!hasPane && $.type(pane) === "boolean") {
                        skipBoundEvents = pane; // allow pane param to be skipped for Layout callback
                        pane = "";
                    }

                    // first trigger the callback set in the options
                    if (fn) {
                        try {
                            // convert function name (string) to function object
                            if (isStr(fn)) {
                                if (fn.match(/,/)) {
                                    // function name cannot contain a comma,
                                    // so must be a function name AND a parameter to pass
                                    args = fn.split(",")
                                        , fn = eval(args[0]);
                                } else // just the name of an external function?
                                    fn = eval(fn);
                            }
                            // execute the callback, if exists
                            if ($.isFunction(fn)) {
                                if (args.length)
                                    retVal = g(fn)(args[1]); // pass the argument parsed from 'list'
                                else if (hasPane)
                                // pass data: pane-name, pane-element, pane-state, pane-options, and layout-name
                                    retVal = g(fn)(pane, $Ps[pane], s, o, lName);
                                else // must be a layout/container callback - pass suitable info
                                    retVal = g(fn)(Instance, s, o, lName);
                            }
                        } catch (ex) {
                            _log(options.errors.callbackError.replace(/EVENT/, $.trim((pane || "") + " " + lng)), false);
                            if ($.type(ex) === "string" && string.length)
                                _log("Exception:  " + ex, false);
                        }
                    }

                    // trigger additional events bound directly to the pane
                    if (!skipBoundEvents && retVal !== false) {
                        if (hasPane) { // PANE events can be bound to each pane-elements
                            o = options[pane];
                            s = state[pane];
                            $P.triggerHandler("layoutpane" + lng, [pane, $P, s, o, lName]);
                            if (shrt)
                                $P.triggerHandler("layoutpane" + shrt, [pane, $P, s, o, lName]);
                        } else { // LAYOUT events can be bound to the container-element
                            $N.triggerHandler("layout" + lng, [Instance, s, o, lName]);
                            if (shrt)
                                $N.triggerHandler("layout" + shrt, [Instance, s, o, lName]);
                        }
                    }

                    // ALWAYS resizeChildren after an onresize_end event - even during initialization
                    // IGNORE onsizecontent_end event because causes child-layouts to resize TWICE
                    if (hasPane && evtName === "onresize_end") // BAD: || evtName === "onsizecontent_end"
                        resizeChildren(pane + "", true); // compiler hack -force string

                    return retVal;

                    function g(f) {
                        return f;
                    }

                    // compiler hack
                }


                /**
                 * cure iframe display issues in IE & other browsers
                 */
                , _fixIframe = function (pane) {
                    if (browser.mozilla)
                        return; // skip FireFox - it auto-refreshes iframes onShow
                    var $P = $Ps[pane];
                    // if the 'pane' is an iframe, do it
                    if (state[pane].tagName === "IFRAME")
                        $P.css(_c.hidden).css(_c.visible);
                    else // ditto for any iframes INSIDE the pane
                        $P.find('IFRAME').css(_c.hidden).css(_c.visible);
                }

                /**
                 * @param  {string}  pane  Can accept ONLY a 'pane' (east, west, etc)
                 * @param  {number=}  outerSize (optional) Can pass a width, allowing calculations BEFORE element is resized
                 * @return {number}  Returns the innerHeight/Width of el by subtracting padding and borders
                 */
                , cssSize = function (pane, outerSize) {
                    var fn = _c[pane].dir == "horz" ? cssH : cssW;
                    return fn($Ps[pane], outerSize);
                }

                /**
                 * @param  {string}  pane  Can accept ONLY a 'pane' (east, west, etc)
                 * @return {Object}  Returns hash of minWidth & minHeight
                 */
                , cssMinDims = function (pane) {
                    // minWidth/Height means CSS width/height = 1px
                    var $P = $Ps[pane]
                        , dir = _c[pane].dir
                        , d = {
                            minWidth: 1001 - cssW($P, 1000)
                            , minHeight: 1001 - cssH($P, 1000)
                        }
                    ;
                    if (dir === "horz")
                        d.minSize = d.minHeight;
                    if (dir === "vert")
                        d.minSize = d.minWidth;
                    return d;
                }

                // TODO: see if these methods can be made more useful...
                // TODO: *maybe* return cssW/H from these so caller can use this info

                /**
                 * @param {(string|!Object)}  el
                 * @param {number=}    outerWidth
                 * @param {boolean=}    [autoHide=false]
                 */
                , setOuterWidth = function (el, outerWidth, autoHide) {
                    var $E = el, w;
                    if (isStr(el))
                        $E = $Ps[el]; // west
                    else if (!el.jquery)
                        $E = $(el);
                    w = cssW($E, outerWidth);
                    $E.css({width: w});
                    if (w > 0) {
                        if (autoHide && $E.data('autoHidden') && $E.innerHeight() > 0) {
                            $E.show().data('autoHidden', false);
                            if (!browser.mozilla) // FireFox refreshes iframes - IE does not
                            // make hidden, then visible to 'refresh' display after animation
                                $E.css(_c.hidden).css(_c.visible);
                        }
                    } else if (autoHide && !$E.data('autoHidden'))
                        $E.hide().data('autoHidden', true);
                }

                /**
                 * @param {(string|!Object)}  el
                 * @param {number=}    outerHeight
                 * @param {boolean=}    [autoHide=false]
                 */
                , setOuterHeight = function (el, outerHeight, autoHide) {
                    var $E = el, h;
                    if (isStr(el))
                        $E = $Ps[el]; // west
                    else if (!el.jquery)
                        $E = $(el);
                    h = cssH($E, outerHeight);
                    $E.css({height: h, visibility: "visible"}); // may have been 'hidden' by sizeContent
                    if (h > 0 && $E.innerWidth() > 0) {
                        if (autoHide && $E.data('autoHidden')) {
                            $E.show().data('autoHidden', false);
                            if (!browser.mozilla) // FireFox refreshes iframes - IE does not
                                $E.css(_c.hidden).css(_c.visible);
                        }
                    } else if (autoHide && !$E.data('autoHidden'))
                        $E.hide().data('autoHidden', true);
                }


                /**
                 * Converts any 'size' params to a pixel/integer size, if not already
                 * If 'auto' or a decimal/percentage is passed as 'size', a pixel-size is calculated
                 *
                 /**
                 * @param  {string}    pane
                 * @param  {(string|number)=} size
                 * @param  {string=}    [dir]
                 * @return {number}
                 */
                , _parseSize = function (pane, size, dir) {
                    if (!dir)
                        dir = _c[pane].dir;

                    if (isStr(size) && size.match(/%/))
                        size = (size === '100%') ? -1 : parseInt(size, 10) / 100; // convert % to decimal

                    if (size === 0)
                        return 0;
                    else if (size >= 1)
                        return parseInt(size, 10);

                    var o = options, avail = 0;
                    if (dir == "horz") // north or south or center.minHeight
                        avail = sC.innerHeight - ($Ps.north ? o.north.spacing_open : 0) - ($Ps.south ? o.south.spacing_open : 0);
                    else if (dir == "vert") // east or west or center.minWidth
                        avail = sC.innerWidth - ($Ps.west ? o.west.spacing_open : 0) - ($Ps.east ? o.east.spacing_open : 0);

                    if (size === -1) // -1 == 100%
                        return avail;
                    else if (size > 0) // percentage, eg: .25
                        return round(avail * size);
                    else if (pane == "center")
                        return 0;
                    else { // size < 0 || size=='auto' || size==Missing || size==Invalid
                        // auto-size the pane
                        var dim = (dir === "horz" ? "height" : "width")
                            , $P = $Ps[pane]
                            , $C = dim === 'height' ? $Cs[pane] : false
                            , vis = $.layout.showInvisibly($P) // show pane invisibly if hidden
                            , szP = $P.css(dim) // SAVE current pane size
                            , szC = $C ? $C.css(dim) : 0 // SAVE current content size
                        ;
                        $P.css(dim, "auto");
                        if ($C)
                            $C.css(dim, "auto");
                        size = (dim === "height") ? $P.outerHeight() : $P.outerWidth(); // MEASURE
                        $P.css(dim, szP).css(vis); // RESET size & visibility
                        if ($C)
                            $C.css(dim, szC);
                        return size;
                    }
                }

                /**
                 * Calculates current 'size' (outer-width or outer-height) of a border-pane - optionally with 'pane-spacing' added
                 *
                 * @param  {(string|!Object)} pane
                 * @param  {boolean=}   [inclSpace=false]
                 * @return {number}    Returns EITHER Width for east/west panes OR Height for north/south panes
                 */
                , getPaneSize = function (pane, inclSpace) {
                    var
                        $P = $Ps[pane]
                        , o = options[pane]
                        , s = state[pane]
                        , oSp = (inclSpace ? o.spacing_open : 0)
                        , cSp = (inclSpace ? o.spacing_closed : 0)
                    ;
                    if (!$P || s.isHidden)
                        return 0;
                    else if (s.isClosed || (s.isSliding && inclSpace))
                        return cSp;
                    else if (_c[pane].dir === "horz")
                        return $P.outerHeight() + oSp;
                    else // dir === "vert"
                        return $P.outerWidth() + oSp;
                }

                /**
                 * Calculate min/max pane dimensions and limits for resizing
                 *
                 * @param  {string}  pane
                 * @param  {boolean=} [slide=false]
                 */
                , setSizeLimits = function (pane, slide) {
                    if (!isInitialized())
                        return;
                    var
                        o = options[pane]
                        , s = state[pane]
                        , c = _c[pane]
                        , dir = c.dir
                        , type = c.sizeType.toLowerCase()
                        , isSliding = (slide != undefined ? slide : s.isSliding) // only open() passes 'slide' param
                        , $P = $Ps[pane]
                        , paneSpacing = o.spacing_open
                        // measure the pane on the *opposite side* from this pane
                        , altPane = _c.oppositeEdge[pane]
                        , altS = state[altPane]
                        , $altP = $Ps[altPane]
                        , altPaneSize = (!$altP || altS.isVisible === false || altS.isSliding ? 0 : (dir == "horz" ? $altP.outerHeight() : $altP.outerWidth()))
                        , altPaneSpacing = ((!$altP || altS.isHidden ? 0 : options[altPane][altS.isClosed !== false ? "spacing_closed" : "spacing_open"]) || 0)
                        // limitSize prevents this pane from 'overlapping' opposite pane
                        , containerSize = (dir == "horz" ? sC.innerHeight : sC.innerWidth)
                        , minCenterDims = cssMinDims("center")
                        , minCenterSize = dir == "horz" ? max(options.center.minHeight, minCenterDims.minHeight) : max(options.center.minWidth, minCenterDims.minWidth)
                        // if pane is 'sliding', then ignore center and alt-pane sizes - because 'overlays' them
                        , limitSize = (containerSize - paneSpacing - (isSliding ? 0 : (_parseSize("center", minCenterSize, dir) + altPaneSize + altPaneSpacing)))
                        , minSize = s.minSize = max(_parseSize(pane, o.minSize), cssMinDims(pane).minSize)
                        , maxSize = s.maxSize = min((o.maxSize ? _parseSize(pane, o.maxSize) : 100000), limitSize)
                        , r = s.resizerPosition = {} // used to set resizing limits
                        , top = sC.inset.top
                        , left = sC.inset.left
                        , W = sC.innerWidth
                        , H = sC.innerHeight
                        , rW = o.spacing_open // subtract resizer-width to get top/left position for south/east
                    ;
                    switch (pane) {
                        case "north":
                            r.min = top + minSize;
                            r.max = top + maxSize;
                            break;
                        case "west":
                            r.min = left + minSize;
                            r.max = left + maxSize;
                            break;
                        case "south":
                            r.min = top + H - maxSize - rW;
                            r.max = top + H - minSize - rW;
                            break;
                        case "east":
                            r.min = left + W - maxSize - rW;
                            r.max = left + W - minSize - rW;
                            break;
                    }
                }

                /**
                 * Returns data for setting the size/position of center pane. Also used to set Height for east/west panes
                 *
                 * @return JSON  Returns a hash of all dimensions: top, bottom, left, right, (outer) width and (outer) height
                 */
                , calcNewCenterPaneDims = function () {
                    var d = {
                        top: getPaneSize("north", true) // true = include 'spacing' value for pane
                        , bottom: getPaneSize("south", true)
                        , left: getPaneSize("west", true)
                        , right: getPaneSize("east", true)
                        , width: 0
                        , height: 0
                    };

                    // NOTE: sC = state.container
                    // calc center-pane outer dimensions
                    d.width = sC.innerWidth - d.left - d.right;  // outerWidth
                    d.height = sC.innerHeight - d.bottom - d.top; // outerHeight
                    // add the 'container border/padding' to get final positions relative to the container
                    d.top += sC.inset.top;
                    d.bottom += sC.inset.bottom;
                    d.left += sC.inset.left;
                    d.right += sC.inset.right;

                    return d;
                }


                /**
                 * @param {!Object}  el
                 * @param {boolean=}  [allStates=false]
                 */
                , getHoverClasses = function (el, allStates) {
                    var
                        $El = $(el)
                        , type = $El.data("layoutRole")
                        , pane = $El.data("layoutEdge")
                        , o = options[pane]
                        , root = o[type + "Class"]
                        , _pane = "-" + pane // eg: "-west"
                        , _open = "-open"
                        , _closed = "-closed"
                        , _slide = "-sliding"
                        , _hover = "-hover " // NOTE the trailing space
                        , _state = $El.hasClass(root + _closed) ? _closed : _open
                        , _alt = _state === _closed ? _open : _closed
                        , classes = (root + _hover) + (root + _pane + _hover) + (root + _state + _hover) + (root + _pane + _state + _hover)
                    ;
                    if (allStates) // when 'removing' classes, also remove alternate-state classes
                        classes += (root + _alt + _hover) + (root + _pane + _alt + _hover);

                    if (type == "resizer" && $El.hasClass(root + _slide))
                        classes += (root + _slide + _hover) + (root + _pane + _slide + _hover);

                    return $.trim(classes);
                }
                , addHover = function (evt, el) {
                    var $E = $(el || this);
                    if (evt && $E.data("layoutRole") === "toggler")
                        evt.stopPropagation(); // prevent triggering 'slide' on Resizer-bar
                    $E.addClass(getHoverClasses($E));
                }
                , removeHover = function (evt, el) {
                    var $E = $(el || this);
                    $E.removeClass(getHoverClasses($E, true));
                }

                , onResizerEnter = function (evt) { // ALSO called by toggler.mouseenter
                    var pane = $(this).data("layoutEdge")
                        , s = state[pane]
                        , $d = $(document)
                    ;
                    // ignore closed-panes and mouse moving back & forth over resizer!
                    // also ignore if ANY pane is currently resizing
                    if (s.isResizing || state.paneResizing)
                        return;

                    if (options.maskPanesEarly)
                        showMasks(pane, {resizing: true});
                }
                , onResizerLeave = function (evt, el) {
                    var e = el || this // el is only passed when called by the timer
                        , pane = $(e).data("layoutEdge")
                        , name = pane + "ResizerLeave"
                        , $d = $(document)
                    ;
                    timer.clear(pane + "_openSlider"); // cancel slideOpen timer, if set
                    timer.clear(name); // cancel enableSelection timer - may re/set below
                    // this method calls itself on a timer because it needs to allow
                    // enough time for dragging to kick-in and set the isResizing flag
                    // dragging has a 100ms delay set, so this delay must be >100
                    if (!el) // 1st call - mouseleave event
                        timer.set(name, function () {
                            onResizerLeave(evt, e);
                        }, 200);
                    // if user is resizing, dragStop will reset everything, so skip it here
                    else if (options.maskPanesEarly && !state.paneResizing) // 2nd call - by timer
                        hideMasks();
                }

                /*
         * ###########################
         *   INITIALIZATION METHODS
         * ###########################
         */

                /**
                 * Initialize the layout - called automatically whenever an instance of layout is created
                 *
                 * @see  none - triggered onInit
                 * @return  mixed true = fully initialized | false = panes not initialized (yet) | 'cancel' = abort
                 */
                , _create = function () {
                    // initialize config/options
                    initOptions();
                    var o = options
                        , s = state;

                    // TEMP state so isInitialized returns true during init process
                    s.creatingLayout = true;

                    // init plugins for this layout, if there are any (eg: stateManagement)
                    runPluginCallbacks(Instance, $.layout.onCreate);

                    // options & state have been initialized, so now run beforeLoad callback
                    // onload will CANCEL layout creation if it returns false
                    if (false === _runCallbacks("onload_start"))
                        return 'cancel';

                    // initialize the container element
                    _initContainer();

                    // bind hotkey function - keyDown - if required
                    initHotkeys();

                    // bind window.onunload
                    $(window).on("unload." + sID, unload);

                    // init plugins for this layout, if there are any (eg: customButtons)
                    runPluginCallbacks(Instance, $.layout.onLoad);

                    // if layout elements are hidden, then layout WILL NOT complete initialization!
                    // initLayoutElements will set initialized=true and run the onload callback IF successful
                    if (o.initPanes)
                        _initLayoutElements();

                    delete s.creatingLayout;

                    resizeAll();

                    $.each(["south", "north", "east", "west"], function (i, pane) {
                        if (!$Ps[pane])
                            return; // no pane - SKIP
                        o = options[pane];
                        s = state[pane];

                        $P = $Ps[pane];
                        if (o.initHidden) {
                            hide(pane);
                        } else if (o.initClosed) {
                            close(pane);
                        }
                    });

                    return state.initialized;
                }

                /**
                 * Initialize the layout IF not already
                 *
                 * @see  All methods in Instance run this test
                 * @return  boolean true = layoutElements have been initialized | false = panes are not initialized (yet)
                 */
                , isInitialized = function () {
                    if (state.initialized || state.creatingLayout)
                        return true; // already initialized
                    else
                        return _initLayoutElements(); // try to init panes NOW
                }

                /**
                 * Initialize the layout - called automatically whenever an instance of layout is created
                 *
                 * @see  _create() & isInitialized
                 * @param {boolean=}  [retry=false] // indicates this is a 2nd try
                 * @return  An object pointer to the instance created
                 */
                , _initLayoutElements = function (retry) {
                    // initialize config/options
                    var o = options;
                    // CANNOT init panes inside a hidden container!
                    if (!$N.is(":visible")) {
                        // handle Chrome bug where popup window 'has no height'
                        // if layout is BODY element, try again in 50ms
                        // SEE: http://layout.jquery-dev.com/samples/test_popup_window.html
                        if (!retry && browser.webkit && $N[0].tagName === "BODY")
                            setTimeout(function () {
                                _initLayoutElements(true);
                            }, 50);
                        return false;
                    }

                    // a center pane is required, so make sure it exists
                    if (!getPane("center").length) {
                        return _log(o.errors.centerPaneMissing);
                    }

                    // TEMP state so isInitialized returns true during init process
                    state.creatingLayout = true;

                    // update Container dims
                    $.extend(sC, elDims($N, o.inset)); // passing inset means DO NOT include insetX values

                    // initialize all layout elements
                    initPanes(); // size & position panes - calls initHandles() - which calls initResizable()

                    if (o.scrollToBookmarkOnLoad) {
                        var l = self.location;
                        if (l.hash)
                            l.replace(l.hash); // scrollTo Bookmark
                    }

                    // check to see if this layout 'nested' inside a pane
                    if (Instance.hasParentLayout)
                        o.resizeWithWindow = false;
                    // bind resizeAll() for 'this layout instance' to window.resize event
                    else if (o.resizeWithWindow)
                        $(window).on("resize." + sID, windowResize);

                    delete state.creatingLayout;
                    state.initialized = true;

                    // init plugins for this layout, if there are any
                    runPluginCallbacks(Instance, $.layout.onReady);

                    // now run the onload callback, if exists
                    _runCallbacks("onload_end");

                    return true; // elements initialized successfully
                }

                /**
                 * Initialize nested layouts for a specific pane - can optionally pass layout-options
                 *
                 * @param {(string|Object)} evt_or_pane The pane being opened, ie: north, south, east, or west
                 * @param {Object=}   [opts]  Layout-options - if passed, will OVERRRIDE options[pane].children
                 * @return  An object pointer to the layout instance created - or null
                 */
                , createChildren = function (evt_or_pane, opts) {
                    var pane = evtPane.call(this, evt_or_pane)
                        , $P = $Ps[pane]
                    ;
                    if (!$P)
                        return;
                    var $C = $Cs[pane]
                        , s = state[pane]
                        , o = options[pane]
                        , sm = options.stateManagement || {}
                        , cos = opts ? (o.children = opts) : o.children
                    ;
                    if ($.isPlainObject(cos))
                        cos = [cos]; // convert a hash to a 1-elem array
                    else if (!cos || !$.isArray(cos))
                        return;

                    $.each(cos, function (idx, co) {
                        if (!$.isPlainObject(co))
                            return;

                        // determine which element is supposed to be the 'child container'
                        // if pane has a 'containerSelector' OR a 'content-div', use those instead of the pane
                        var $containers = co.containerSelector ? $P.find(co.containerSelector) : ($C || $P);

                        $containers.each(function () {
                            var $cont = $(this)
                                , child = $cont.data("layout") // see if a child-layout ALREADY exists on this element
                            ;
                            // if no layout exists, but children are set, try to create the layout now
                            if (!child) {
                                // TODO: see about moving this to the stateManagement plugin, as a method
                                // set a unique child-instance key for this layout, if not already set
                                setInstanceKey({container: $cont, options: co}, s);
                                // If THIS layout has a hash in stateManagement.autoLoad,
                                // then see if it also contains state-data for this child-layout
                                // If so, copy the stateData to child.options.stateManagement.autoLoad
                                if (sm.includeChildren && state.stateData[pane]) {
                                    // THIS layout's state was cached when its state was loaded
                                    var paneChildren = state.stateData[pane].children || {}
                                        , childState = paneChildren[co.instanceKey]
                                        , co_sm = co.stateManagement || (co.stateManagement = {autoLoad: true})
                                    ;
                                    // COPY the stateData into the autoLoad key
                                    if (co_sm.autoLoad === true && childState) {
                                        co_sm.autoSave = false; // disable autoSave because saving handled by parent-layout
                                        co_sm.includeChildren = true;  // cascade option - FOR NOW
                                        co_sm.autoLoad = $.extend(true, {}, childState); // COPY the state-hash
                                    }
                                }

                                // create the layout
                                child = $cont.layout(co);

                                // if successful, update data
                                if (child) {
                                    // add the child and update all layout-pointers
                                    // MAY have already been done by child-layout calling parent.refreshChildren()
                                    refreshChildren(pane, child);
                                }
                            }
                        });
                    });
                }

                , setInstanceKey = function (child, parentPaneState) {
                    // create a named key for use in state and instance branches
                    var $c = child.container
                        , o = child.options
                        , sm = o.stateManagement
                        , key = o.instanceKey || $c.data("layoutInstanceKey")
                    ;
                    if (!key)
                        key = (sm && sm.cookie ? sm.cookie.name : '') || o.name; // look for a name/key
                    if (!key)
                        key = "layout" + (++parentPaneState.childIdx); // if no name/key found, generate one
                    else
                        key = key.replace(/[^\w-]/gi, '_').replace(/_{2,}/g, '_');  // ensure is valid as a hash key
                    o.instanceKey = key;
                    $c.data("layoutInstanceKey", key); // useful if layout is destroyed and then recreated
                    return key;
                }

                /**
                 * @param {string}  pane  The pane being opened, ie: north, south, east, or west
                 * @param {Object=}  newChild New child-layout Instance to add to this pane
                 */
                , refreshChildren = function (pane, newChild) {
                    var $P = $Ps[pane]
                        , pC = children[pane]
                        , s = state[pane]
                        , o
                    ;
                    // check for destroy()ed layouts and update the child pointers & arrays
                    if ($.isPlainObject(pC)) {
                        $.each(pC, function (key, child) {
                            if (child.destroyed)
                                delete pC[key]
                        });
                        // if no more children, remove the children hash
                        if ($.isEmptyObject(pC))
                            pC = children[pane] = null; // clear children hash
                    }

                    // see if there is a directly-nested layout inside this pane
                    // if there is, then there can be only ONE child-layout, so check that...
                    if (!newChild && !pC) {
                        newChild = $P.data("layout");
                    }

                    // if a newChild instance was passed, add it to children[pane]
                    if (newChild) {
                        // update child.state
                        newChild.hasParentLayout = true; // set parent-flag in child
                        // instanceKey is a key-name used in both state and children
                        o = newChild.options;
                        // set a unique child-instance key for this layout, if not already set
                        setInstanceKey(newChild, s);
                        // add pointer to pane.children hash
                        if (!pC)
                            pC = children[pane] = {}; // create an empty children hash
                        pC[o.instanceKey] = newChild.container.data("layout"); // add childLayout instance
                    }

                    // ALWAYS refresh the pane.children alias, even if null
                    Instance[pane].children = children[pane];

                    // if newChild was NOT passed - see if there is a child layout NOW
                    if (!newChild) {
                        createChildren(pane); // MAY create a child and re-call this method
                    }
                }

                , windowResize = function () {
                    var o = options
                        , delay = Number(o.resizeWithWindowDelay);
                    if (delay < 10)
                        delay = 100; // MUST have a delay!
                    // resizing uses a delay-loop because the resize event fires repeatly - except in FF, but delay anyway
                    timer.clear("winResize"); // if already running
                    timer.set("winResize", function () {
                        timer.clear("winResize");
                        timer.clear("winResizeRepeater");
                        var dims = elDims($N, o.inset);
                        // only trigger resizeAll() if container has changed size
                        if (dims.innerWidth !== sC.innerWidth || dims.innerHeight !== sC.innerHeight)
                            resizeAll();
                    }, delay);
                    // ALSO set fixed-delay timer, if not already running
                    if (!timer.data["winResizeRepeater"])
                        setWindowResizeRepeater();
                }

                , setWindowResizeRepeater = function () {
                    var delay = Number(options.resizeWithWindowMaxDelay);
                    if (delay > 0)
                        timer.set("winResizeRepeater", function () {
                            setWindowResizeRepeater();
                            resizeAll();
                        }, delay);
                }

                , unload = function () {
                    var o = options;

                    _runCallbacks("onunload_start");

                    // trigger plugin callabacks for this layout (eg: stateManagement)
                    runPluginCallbacks(Instance, $.layout.onUnload);

                    _runCallbacks("onunload_end");
                }

                /**
                 * Validate and initialize container CSS and events
                 *
                 * @see  _create()
                 */
                , _initContainer = function () {
                    var
                        N = $N[0]
                        , $H = $("html")
                        , tag = sC.tagName = N.tagName
                        , id = sC.id = N.id
                        , cls = sC.className = N.className
                        , o = options
                        , name = o.name
                        , props = "position,margin,padding,border"
                        , css = "layoutCSS"
                        , CSS = {}
                        , hid = "hidden" // used A LOT!
                        // see if this container is a 'pane' inside an outer-layout
                        , parent = $N.data("parentLayout") // parent-layout Instance
                        , pane = $N.data("layoutEdge")  // pane-name in parent-layout
                        , isChild = parent && pane
                        , num = $.layout.cssNum
                        , $parent, n
                    ;
                    // sC = state.container
                    //sC.selector = $N.selector.split(".slice")[0];
                    sC.ref = (o.name ? o.name + ' layout / ' : '') + tag + (id ? "#" + id : cls ? '.[' + cls + ']' : ''); // used in messages
                    sC.isBody = (tag === "BODY");

                    // try to find a parent-layout
                    if (!isChild && !sC.isBody) {
                        $parent = $N.closest("." + $.layout.defaults.panes.paneClass);
                        parent = $parent.data("parentLayout");
                        pane = $parent.data("layoutEdge");
                        isChild = parent && pane;
                    }

                    $N.data({
                        layout: Instance
                        , layoutContainer: sID // FLAG to indicate this is a layout-container - contains unique internal ID
                    })
                        .addClass(o.containerClass)
                    ;
                    var layoutMethods = {
                        destroy: ''
                        , initPanes: ''
                        , resizeAll: 'resizeAll'
                        , resize: 'resizeAll'
                    };
                    // loop hash and bind all methods - include layoutID namespacing
                    for (name in layoutMethods) {
                        $N.on("layout" + name.toLowerCase() + "." + sID, Instance[layoutMethods[name] || name]);
                    }

                    // if this container is another layout's 'pane', then set child/parent pointers
                    if (isChild) {
                        // update parent flag
                        Instance.hasParentLayout = true;
                        // set pointers to THIS child-layout (Instance) in parent-layout
                        parent.refreshChildren(pane, Instance);
                    }

                    // SAVE original container CSS for use in destroy()
                    if (!$N.data(css)) {
                        // handle props like overflow different for BODY & HTML - has 'system default' values
                        if (sC.isBody) {
                            // SAVE <BODY> CSS
                            $N.data(css, $.extend(styles($N, props), {
                                height: $N.css("height")
                                , overflow: $N.css("overflow")
                                , overflowX: $N.css("overflowX")
                                , overflowY: $N.css("overflowY")
                            }));
                            // ALSO SAVE <HTML> CSS
                            $H.data(css, $.extend(styles($H, 'padding'), {
                                height: "auto" // FF would return a fixed px-size!
                                , overflow: $H.css("overflow")
                                , overflowX: $H.css("overflowX")
                                , overflowY: $H.css("overflowY")
                            }));
                        } else // handle props normally for non-body elements
                            $N.data(css, styles($N, props + ",top,bottom,left,right,width,height,overflow,overflowX,overflowY"));
                    }

                    try {
                        // common container CSS
                        CSS = {
                            overflow: hid
                            , overflowX: hid
                            , overflowY: hid
                        };
                        $N.css(CSS);

                        if (o.inset && !$.isPlainObject(o.inset)) {
                            // can specify a single number for equal outset all-around
                            n = parseInt(o.inset, 10) || 0;
                            o.inset = {
                                top: n
                                , bottom: n
                                , left: n
                                , right: n
                            };
                        }

                        // format html & body if this is a full page layout
                        if (sC.isBody) {
                            // if HTML has padding, use this as an outer-spacing around BODY
                            if (!o.outset) {
                                // use padding from parent-elem (HTML) as outset
                                o.outset = {
                                    top: num($H, "paddingTop")
                                    , bottom: num($H, "paddingBottom")
                                    , left: num($H, "paddingLeft")
                                    , right: num($H, "paddingRight")
                                };
                            } else if (!$.isPlainObject(o.outset)) {
                                // can specify a single number for equal outset all-around
                                n = parseInt(o.outset, 10) || 0;
                                o.outset = {
                                    top: n
                                    , bottom: n
                                    , left: n
                                    , right: n
                                };
                            }
                            // HTML
                            $H.css(CSS).css({
                                height: "100%"
                                , border: "none" // no border or padding allowed when using height = 100%
                                , padding: 0  // ditto
                                , margin: 0
                            });
                            // BODY
                            if (browser.isIE6) {
                                // IE6 CANNOT use the trick of setting absolute positioning on all 4 sides - must have 'height'
                                $N.css({
                                    width: "100%"
                                    , height: "100%"
                                    , border: "none" // no border or padding allowed when using height = 100%
                                    , padding: 0  // ditto
                                    , margin: 0
                                    , position: "relative"
                                });
                                // convert body padding to an inset option - the border cannot be measured in IE6!
                                if (!o.inset)
                                    o.inset = elDims($N).inset;
                            } else { // use absolute positioning for BODY to allow borders & padding without overflow
                                $N.css({
                                    width: "auto"
                                    , height: "auto"
                                    , margin: 0
                                    , position: "absolute" // allows for border and padding on BODY
                                });
                                // apply edge-positioning created above
                                $N.css(o.outset);
                            }
                            // set current layout-container dimensions
                            $.extend(sC, elDims($N, o.inset)); // passing inset means DO NOT include insetX values
                        } else {
                            // container MUST have 'position'
                            var p = $N.css("position");
                            if (!p || !p.match(/(fixed|absolute|relative)/))
                                $N.css("position", "relative");

                            // set current layout-container dimensions
                            if ($N.is(":visible")) {
                                $.extend(sC, elDims($N, o.inset)); // passing inset means DO NOT change insetX (padding) values
                                if (sC.innerHeight < 1) // container has no 'height' - warn developer
                                    _log(o.errors.noContainerHeight.replace(/CONTAINER/, sC.ref));
                            }
                        }

                        // if container has min-width/height, then enable scrollbar(s)
                        if (num($N, "minWidth"))
                            $N.parent().css("overflowX", "auto");
                        if (num($N, "minHeight"))
                            $N.parent().css("overflowY", "auto");

                    } catch (ex) {
                    }
                }

                /**
                 * Bind layout hotkeys - if options enabled
                 *
                 * @see  _create() and addPane()
                 * @param {string=} [panes=""] The edge(s) to process
                 */
                , initHotkeys = function (panes) {
                    panes = panes ? panes.split(",") : _c.borderPanes;
                    // bind keyDown to capture hotkeys, if option enabled for ANY pane
                    $.each(panes, function (i, pane) {
                        var o = options[pane];
                        if (o.enableCursorHotkey || o.customHotkey) {
                            $(document).on("keydown." + sID, keyDown); // only need to bind this ONCE
                            return false; // BREAK - binding was done
                        }
                    });
                }

                /**
                 * Build final OPTIONS data
                 *
                 * @see  _create()
                 */
                , initOptions = function () {
                    var data, d, pane, key, val, i, c, o;

                    // reprocess user's layout-options to have correct options sub-key structure
                    opts = $.layout.transformData(opts, true); // panes = default subkey

                    // auto-rename old options for backward compatibility
                    opts = $.layout.backwardCompatibility.renameAllOptions(opts);

                    // if user-options has 'panes' key (pane-defaults), clean it...
                    if (!$.isEmptyObject(opts.panes)) {
                        // REMOVE any pane-defaults that MUST be set per-pane
                        data = $.layout.optionsMap.noDefault;
                        for (i = 0, c = data.length; i < c; i++) {
                            key = data[i];
                            delete opts.panes[key]; // OK if does not exist
                        }
                        // REMOVE any layout-options specified under opts.panes
                        data = $.layout.optionsMap.layout;
                        for (i = 0, c = data.length; i < c; i++) {
                            key = data[i];
                            delete opts.panes[key]; // OK if does not exist
                        }
                    }

                    // MOVE any NON-layout-options from opts-root to opts.panes
                    data = $.layout.optionsMap.layout;
                    var rootKeys = $.layout.config.optionRootKeys;
                    for (key in opts) {
                        val = opts[key];
                        if ($.inArray(key, rootKeys) < 0 && $.inArray(key, data) < 0) {
                            if (!opts.panes[key])
                                opts.panes[key] = $.isPlainObject(val) ? $.extend(true, {}, val) : val;
                            delete opts[key]
                        }
                    }

                    // START by updating ALL options from opts
                    $.extend(true, options, opts);

                    // CREATE final options (and config) for EACH pane
                    $.each(_c.allPanes, function (i, pane) {

                        // apply 'pane-defaults' to CONFIG.[PANE]
                        _c[pane] = $.extend(true, {}, _c.panes, _c[pane]);

                        d = options.panes;
                        o = options[pane];

                        // center-pane uses SOME keys in defaults.panes branch
                        if (pane === 'center') {
                            // ONLY copy keys from opts.panes listed in: $.layout.optionsMap.center
                            data = $.layout.optionsMap.center;  // list of 'center-pane keys'
                            for (i = 0, c = data.length; i < c; i++) { // loop the list...
                                key = data[i];
                                // only need to use pane-default if pane-specific value not set
                                if (!opts.center[key] && (opts.panes[key] || !o[key]))
                                    o[key] = d[key]; // pane-default
                            }
                        } else {
                            // border-panes use ALL keys in defaults.panes branch
                            o = options[pane] = $.extend(true, {}, d, o); // re-apply pane-specific opts AFTER pane-defaults
                            createFxOptions(pane);
                            // ensure all border-pane-specific base-classes exist
                            if (!o.resizerClass)
                                o.resizerClass = "ui-layout-resizer";
                            if (!o.togglerClass)
                                o.togglerClass = "ui-layout-toggler";
                        }
                        // ensure we have base pane-class (ALL panes)
                        if (!o.paneClass)
                            o.paneClass = "ui-layout-pane";
                    });

                    // update options.zIndexes if a zIndex-option specified
                    var zo = opts.zIndex
                        , z = options.zIndexes;
                    if (zo > 0) {
                        z.pane_normal = zo;
                        z.content_mask = max(zo + 1, z.content_mask); // MIN = +1
                        z.resizer_normal = max(zo + 2, z.resizer_normal); // MIN = +2
                    }

                    // DELETE 'panes' key now that we are done - values were copied to EACH pane
                    delete options.panes;


                    function createFxOptions(pane) {
                        var o = options[pane]
                            , d = options.panes;
                        // ensure fxSettings key to avoid errors
                        if (!o.fxSettings)
                            o.fxSettings = {};
                        if (!d.fxSettings)
                            d.fxSettings = {};

                        $.each(["_open", "_close", "_size"], function (i, n) {
                            var
                                sName = "fxName" + n
                                , sSpeed = "fxSpeed" + n
                                , sSettings = "fxSettings" + n
                                // recalculate fxName according to specificity rules
                                , fxName = o[sName] =
                                o[sName] // options.west.fxName_open
                                || d[sName] // options.panes.fxName_open
                                || o.fxName // options.west.fxName
                                || d.fxName // options.panes.fxName
                                || "none"  // MEANS $.layout.defaults.panes.fxName == "" || false || null || 0
                                , fxExists = $.effects && ($.effects[fxName] || ($.effects.effect && $.effects.effect[fxName]))
                            ;
                            // validate fxName to ensure is valid effect - MUST have effect-config data in options.effects
                            if (fxName === "none" || !options.effects[fxName] || !fxExists)
                                fxName = o[sName] = "none"; // effect not loaded OR unrecognized fxName

                            // set vars for effects subkeys to simplify logic
                            var fx = options.effects[fxName] || {} // effects.slide
                                , fx_all = fx.all || null    // effects.slide.all
                                , fx_pane = fx[pane] || null    // effects.slide.west
                            ;
                            // create fxSpeed[_open|_close|_size]
                            o[sSpeed] =
                                o[sSpeed]    // options.west.fxSpeed_open
                                || d[sSpeed]    // options.west.fxSpeed_open
                                || o.fxSpeed    // options.west.fxSpeed
                                || d.fxSpeed    // options.panes.fxSpeed
                                || null     // DEFAULT - let fxSetting.duration control speed
                            ;
                            // create fxSettings[_open|_close|_size]
                            o[sSettings] = $.extend(
                                true
                                , {}
                                , fx_all     // effects.slide.all
                                , fx_pane     // effects.slide.west
                                , d.fxSettings   // options.panes.fxSettings
                                , o.fxSettings   // options.west.fxSettings
                                , d[sSettings]   // options.panes.fxSettings_open
                                , o[sSettings]   // options.west.fxSettings_open
                            );
                        });

                        // DONE creating action-specific-settings for this pane,
                        // so DELETE generic options - are no longer meaningful
                        delete o.fxName;
                        delete o.fxSpeed;
                        delete o.fxSettings;
                    }
                }

                /**
                 * Initialize module objects, styling, size and position for all panes
                 *
                 * @see  _initElements()
                 * @param {string} pane  The pane to process
                 */
                , getPane = function (pane) {
                    var sel = options[pane].paneSelector;
                    if (sel.substr(0, 1) === "#") // ID selector
                    // NOTE: elements selected 'by ID' DO NOT have to be 'children'
                        return $N.find(sel).eq(0);
                    else { // class or other selector
                        var $P = $N.children(sel).eq(0);
                        // look for the pane nested inside a 'form' element
                        return $P.length ? $P : $N.children("form:first").children(sel).eq(0);
                    }
                }

                /**
                 * @param {Object=}  evt
                 */
                , initPanes = function (evt) {
                    // stopPropagation if called by trigger("layoutinitpanes") - use evtPane utility
                    evtPane(evt);

                    // NOTE: do north & south FIRST so we can measure their height - do center LAST
                    $.each(_c.allPanes, function (idx, pane) {
                        addPane(pane, true);
                    });

                    // init the pane-handles NOW in case we have to hide or close the pane below
                    initHandles();

                    // now that all panes have been initialized and initially-sized,
                    // make sure there is really enough space available for each pane
                    $.each(_c.borderPanes, function (i, pane) {
                        if ($Ps[pane] && state[pane].isVisible) { // pane is OPEN
                            setSizeLimits(pane);
                            makePaneFit(pane); // pane may be Closed, Hidden or Resized by makePaneFit()
                        }
                    });
                    // size center-pane AGAIN in case we 'closed' a border-pane in loop above
                    sizeMidPanes("center");

                    // Chrome/Webkit sometimes fires callbacks BEFORE it completes resizing!
                    // Before RC30.3, there was a 10ms delay here, but that caused layout
                    // to load asynchrously, which is BAD, so try skipping delay for now

                    // process pane contents and callbacks, and init/resize child-layout if exists
                    $.each(_c.allPanes, function (idx, pane) {
                        afterInitPane(pane);
                    });
                }

                /**
                 * Add a pane to the layout - subroutine of initPanes()
                 *
                 * @see  initPanes()
                 * @param {string} pane   The pane to process
                 * @param {boolean=} [force=false] Size content after init
                 */
                , addPane = function (pane, force) {
                    if (!force && !isInitialized())
                        return;
                    var
                        o = options[pane]
                        , s = state[pane]
                        , c = _c[pane]
                        , dir = c.dir
                        , fx = s.fx
                        , spacing = o.spacing_open || 0
                        , isCenter = (pane === "center")
                        , CSS = {}
                        , $P = $Ps[pane]
                        , size, minSize, maxSize, child
                    ;
                    // if pane-pointer already exists, remove the old one first
                    if ($P)
                        removePane(pane, false, true, false);
                    else
                        $Cs[pane] = false; // init

                    $P = $Ps[pane] = getPane(pane);
                    if (!$P.length) {
                        $Ps[pane] = false; // logic
                        return;
                    }

                    // SAVE original Pane CSS
                    if (!$P.data("layoutCSS")) {
                        var props = "position,top,left,bottom,right,width,height,overflow,zIndex,display,backgroundColor,padding,margin,border";
                        $P.data("layoutCSS", styles($P, props));
                    }

                    // create alias for pane data in Instance - initHandles will add more
                    Instance[pane] = {
                        name: pane
                        , pane: $Ps[pane]
                        , content: $Cs[pane]
                        , options: options[pane]
                        , state: state[pane]
                        , children: children[pane]
                    };

                    // add classes, attributes & events
                    $P.data({
                        parentLayout: Instance  // pointer to Layout Instance
                        , layoutPane: Instance[pane] // NEW pointer to pane-alias-object
                        , layoutEdge: pane
                        , layoutRole: "pane"
                    })
                        .css(c.cssReq).css("zIndex", options.zIndexes.pane_normal)
                        .css(o.applyDemoStyles ? c.cssDemo : {}) // demo styles
                        .addClass(o.paneClass + " " + o.paneClass + "-" + pane) // default = "ui-layout-pane ui-layout-pane-west" - may be a dupe of 'paneSelector'
                        .on("mouseenter." + sID, addHover)
                        .on("mouseleave." + sID, removeHover)
                    ;
                    var paneMethods = {
                        hide: ''
                        , show: ''
                        , toggle: ''
                        , close: ''
                        , open: ''
                        , slideOpen: ''
                        , slideClose: ''
                        , slideToggle: ''
                        , size: 'sizePane'
                        , sizePane: 'sizePane'
                        , sizeContent: ''
                        , sizeHandles: ''
                        , enableClosable: ''
                        , disableClosable: ''
                        , enableSlideable: ''
                        , disableSlideable: ''
                        , enableResizable: ''
                        , disableResizable: ''
                        , swapPanes: 'swapPanes'
                        , swap: 'swapPanes'
                        , move: 'swapPanes'
                        , removePane: 'removePane'
                        , remove: 'removePane'
                        , createChildren: ''
                        , resizeChildren: ''
                        , resizeAll: 'resizeAll'
                        , resizeLayout: 'resizeAll'
                    }
                        , name;
                    // loop hash and bind all methods - include layoutID namespacing
                    for (name in paneMethods) {
                        $P.on("layoutpane" + name.toLowerCase() + "." + sID, Instance[paneMethods[name] || name]);
                    }

                    // see if this pane has a 'scrolling-content element'
                    initContent(pane, false); // false = do NOT sizeContent() - called later

                    if (!isCenter) {
                        // call _parseSize AFTER applying pane classes & styles - but before making visible (if hidden)
                        // if o.size is auto or not valid, then MEASURE the pane and use that as its 'size'
                        size = s.size = _parseSize(pane, o.size);
                        minSize = _parseSize(pane, o.minSize) || 1;
                        maxSize = _parseSize(pane, o.maxSize) || 100000;
                        if (size > 0)
                            size = max(min(size, maxSize), minSize);
                        s.autoResize = o.autoResize; // used with percentage sizes

                        // state for border-panes
                        s.isClosed = false; // true = pane is closed
                        s.isSliding = false; // true = pane is currently open by 'sliding' over adjacent panes
                        s.isResizing = false; // true = pane is in process of being resized
                        s.isHidden = false; // true = pane is hidden - no spacing, resizer or toggler is visible!

                        // array for 'pin buttons' whose classNames are auto-updated on pane-open/-close
                        if (!s.pins)
                            s.pins = [];
                    }
                    // states common to ALL panes
                    s.tagName = $P[0].tagName;
                    s.edge = pane;  // useful if pane is (or about to be) 'swapped' - easy find out where it is (or is going)
                    s.noRoom = false; // true = pane 'automatically' hidden due to insufficient room - will unhide automatically
                    s.isVisible = true;  // false = pane is invisible - closed OR hidden - simplify logic

                    // init pane positioning
                    setPanePosition(pane);

                    // if pane is not visible,
                    if (dir === "horz") // north or south pane
                        CSS.height = cssH($P, size);
                    else if (dir === "vert") // east or west pane
                        CSS.width = cssW($P, size);
                    //else if (isCenter) {}

                    $P.css(CSS); // apply size -- top, bottom & height will be set by sizeMidPanes
                    if (dir != "horz")
                        sizeMidPanes(pane, true); // true = skipCallback

                    // if manually adding a pane AFTER layout initialization, then...
                    if (state.initialized) {
                        initHandles(pane);
                        initHotkeys(pane);
                    }

                    // close or hide the pane if specified in settings
                    if (o.initClosed && o.closable && !o.initHidden)
                        close(pane, true, true); // true, true = force, noAnimation
                    else if (o.initHidden || o.initClosed)
                        hide(pane); // will be completely invisible - no resizer or spacing
                    else if (!s.noRoom)
                    // make the pane visible - in case was initially hidden
                        $P.css("display", "block");
                    // ELSE setAsOpen() - called later by initHandles()

                    // RESET visibility now - pane will appear IF display:block
                    $P.css("visibility", "visible");

                    // check option for auto-handling of pop-ups & drop-downs
                    if (o.showOverflowOnHover)
                        $P.hover(allowOverflow, resetOverflow);

                    // if manually adding a pane AFTER layout initialization, then...
                    if (state.initialized) {
                        afterInitPane(pane);
                    }
                }

                , afterInitPane = function (pane) {
                    var $P = $Ps[pane]
                        , s = state[pane]
                        , o = options[pane]
                    ;
                    if (!$P)
                        return;

                    // see if there is a directly-nested layout inside this pane
                    if ($P.data("layout"))
                        refreshChildren(pane, $P.data("layout"));

                    // process pane contents and callbacks, and init/resize child-layout if exists
                    if (s.isVisible) { // pane is OPEN
                        if (state.initialized) // this pane was added AFTER layout was created
                            resizeAll(); // will also sizeContent
                        else
                            sizeContent(pane);

                        if (o.triggerEventsOnLoad)
                            _runCallbacks("onresize_end", pane);
                        else // automatic if onresize called, otherwise call it specifically
                        // resize child - IF inner-layout already exists (created before this layout)
                            resizeChildren(pane, true); // a previously existing childLayout
                    }

                    // init childLayouts - even if pane is not visible
                    if (o.initChildren && o.children)
                        createChildren(pane);
                }

                /**
                 * @param {string=} panes  The pane(s) to process
                 */
                , setPanePosition = function (panes) {
                    panes = panes ? panes.split(",") : _c.borderPanes;

                    // create toggler DIVs for each pane, and set object pointers for them, eg: $R.north = north toggler DIV
                    $.each(panes, function (i, pane) {
                        var $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , o = options[pane]
                            , s = state[pane]
                            , side = _c[pane].side
                            , CSS = {}
                        ;
                        if (!$P)
                            return; // pane does not exist - skip

                        // set css-position to account for container borders & padding
                        switch (pane) {
                            case "north":
                                CSS.top = sC.inset.top;
                                CSS.left = sC.inset.left;
                                CSS.right = sC.inset.right;
                                break;
                            case "south":
                                CSS.bottom = sC.inset.bottom;
                                CSS.left = sC.inset.left;
                                CSS.right = sC.inset.right;
                                break;
                            case "west":
                                CSS.left = sC.inset.left; // top, bottom & height set by sizeMidPanes()
                                break;
                            case "east":
                                CSS.right = sC.inset.right; // ditto
                                break;
                            case "center": // top, left, width & height set by sizeMidPanes()
                        }
                        // apply position
                        $P.css(CSS);

                        // update resizer position
                        if ($R && s.isClosed)
                            $R.css(side, sC.inset[side]);
                        else if ($R && !s.isHidden)
                            $R.css(side, sC.inset[side] + getPaneSize(pane));
                    });
                }

                /**
                 * Initialize module objects, styling, size and position for all resize bars and toggler buttons
                 *
                 * @see  _create()
                 * @param {string=} [panes=""] The edge(s) to process
                 */
                , initHandles = function (panes) {
                    panes = panes ? panes.split(",") : _c.borderPanes;

                    // create toggler DIVs for each pane, and set object pointers for them, eg: $R.north = north toggler DIV
                    $.each(panes, function (i, pane) {
                        var $P = $Ps[pane];
                        $Rs[pane] = false; // INIT
                        $Ts[pane] = false;
                        if (!$P)
                            return; // pane does not exist - skip

                        var o = options[pane]
                            , s = state[pane]
                            , c = _c[pane]
                            , paneId = o.paneSelector.substr(0, 1) === "#" ? o.paneSelector.substr(1) : ""
                            , rClass = o.resizerClass
                            , tClass = o.togglerClass
                            , spacing = (s.isVisible ? o.spacing_open : o.spacing_closed)
                            , _pane = "-" + pane // used for classNames
                            , _state = (s.isVisible ? "-open" : "-closed") // used for classNames
                            , I = Instance[pane]
                            // INIT RESIZER BAR
                            , $R = I.resizer = $Rs[pane] = $("<div></div>")
                            // INIT TOGGLER BUTTON
                            , $T = I.toggler = (o.closable ? $Ts[pane] = $("<div></div>") : false)
                        ;

                        //if (s.isVisible && o.resizable) ... handled by initResizable
                        if (!s.isVisible && o.slidable)
                            $R.attr("title", o.tips.Slide).css("cursor", o.sliderCursor);

                        $R // if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "paneLeft-resizer"
                            .attr("id", paneId ? paneId + "-resizer" : "")
                            .data({
                                parentLayout: Instance
                                , layoutPane: Instance[pane] // NEW pointer to pane-alias-object
                                , layoutEdge: pane
                                , layoutRole: "resizer"
                            })
                            .css(_c.resizers.cssReq).css("zIndex", options.zIndexes.resizer_normal)
                            .css(o.applyDemoStyles ? _c.resizers.cssDemo : {}) // add demo styles
                            .addClass(rClass + " " + rClass + _pane)
                            .hover(addHover, removeHover) // ALWAYS add hover-classes, even if resizing is not enabled - handle with CSS instead
                            .hover(onResizerEnter, onResizerLeave) // ALWAYS NEED resizer.mouseleave to balance toggler.mouseenter
                            .mousedown($.layout.disableTextSelection) // prevent text-selection OUTSIDE resizer
                            .mouseup($.layout.enableTextSelection)  // not really necessary, but just in case
                            .appendTo($N) // append DIV to container
                        ;
                        if ($.fn.disableSelection)
                            $R.disableSelection(); // prevent text-selection INSIDE resizer
                        if (o.resizerDblClickToggle)
                            $R.on("dblclick." + sID, toggle);

                        if ($T) {
                            $T // if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "#paneLeft-toggler"
                                .attr("id", paneId ? paneId + "-toggler" : "")
                                .data({
                                    parentLayout: Instance
                                    , layoutPane: Instance[pane] // NEW pointer to pane-alias-object
                                    , layoutEdge: pane
                                    , layoutRole: "toggler"
                                })
                                .css(_c.togglers.cssReq) // add base/required styles
                                .css(o.applyDemoStyles ? _c.togglers.cssDemo : {}) // add demo styles
                                .addClass(tClass + " " + tClass + _pane)
                                .hover(addHover, removeHover) // ALWAYS add hover-classes, even if toggling is not enabled - handle with CSS instead
                                .on("mouseenter", onResizerEnter) // NEED toggler.mouseenter because mouseenter MAY NOT fire on resizer
                                .appendTo($R) // append SPAN to resizer DIV
                            ;
                            // ADD INNER-SPANS TO TOGGLER
                            if (o.togglerContent_open) // ui-layout-open
                                $("<span>" + o.togglerContent_open + "</span>")
                                    .data({
                                        layoutEdge: pane
                                        , layoutRole: "togglerContent"
                                    })
                                    .data("layoutRole", "togglerContent")
                                    .data("layoutEdge", pane)
                                    .addClass("content content-open")
                                    .css("display", "none")
                                    .appendTo($T)
                                //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-open instead!
                                ;
                            if (o.togglerContent_closed) // ui-layout-closed
                                $("<span>" + o.togglerContent_closed + "</span>")
                                    .data({
                                        layoutEdge: pane
                                        , layoutRole: "togglerContent"
                                    })
                                    .addClass("content content-closed")
                                    .css("display", "none")
                                    .appendTo($T)
                                //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-closed instead!
                                ;
                            // ADD TOGGLER.click/.hover
                            enableClosable(pane);
                        }

                        // add Draggable events
                        initResizable(pane);

                        // ADD CLASSNAMES & SLIDE-BINDINGS - eg: class="resizer resizer-west resizer-open"
                        if (s.isVisible)
                            setAsOpen(pane); // onOpen will be called, but NOT onResize
                        else {
                            setAsClosed(pane); // onClose will be called
                            bindStartSlidingEvents(pane, true); // will enable events IF option is set
                        }

                    });

                    // SET ALL HANDLE DIMENSIONS
                    sizeHandles();
                }


                /**
                 * Initialize scrolling ui-layout-content div - if exists
                 *
                 * @see  initPane() - or externally after an Ajax injection
                 * @param {string} pane   The pane to process
                 * @param {boolean=} [resize=true] Size content after init
                 */
                , initContent = function (pane, resize) {
                    if (!isInitialized())
                        return;
                    var
                        o = options[pane]
                        , sel = o.contentSelector
                        , I = Instance[pane]
                        , $P = $Ps[pane]
                        , $C
                    ;
                    if (sel)
                        $C = I.content = $Cs[pane] = (o.findNestedContent)
                            ? $P.find(sel).eq(0) // match 1-element only
                            : $P.children(sel).eq(0)
                        ;
                    if ($C && $C.length) {
                        $C.data("layoutRole", "content");
                        // SAVE original Content CSS
                        if (!$C.data("layoutCSS"))
                            $C.data("layoutCSS", styles($C, "height"));
                        $C.css(_c.content.cssReq);
                        if (o.applyDemoStyles) {
                            $C.css(_c.content.cssDemo); // add padding & overflow: auto to content-div
                            $P.css(_c.content.cssDemoPane); // REMOVE padding/scrolling from pane
                        }
                        // ensure no vertical scrollbar on pane - will mess up measurements
                        if ($P.css("overflowX").match(/(scroll|auto)/)) {
                            $P.css("overflow", "hidden");
                        }
                        state[pane].content = {}; // init content state
                        if (resize !== false)
                            sizeContent(pane);
                        // sizeContent() is called AFTER init of all elements
                    } else
                        I.content = $Cs[pane] = false;
                }


                /**
                 * Add resize-bars to all panes that specify it in options
                 * -dependancy: $.fn.resizable - will skip if not found
                 *
                 * @see  _create()
                 * @param {string=} [panes=""] The edge(s) to process
                 */
                , initResizable = function (panes) {
                    var draggingAvailable = $.layout.plugins.draggable
                        , side // set in start()
                    ;
                    panes = panes ? panes.split(",") : _c.borderPanes;

                    $.each(panes, function (idx, pane) {
                        var o = options[pane];
                        if (!draggingAvailable || !$Ps[pane] || !o.resizable) {
                            o.resizable = false;
                            return true; // skip to next
                        }

                        var s = state[pane]
                            , z = options.zIndexes
                            , c = _c[pane]
                            , side = c.dir == "horz" ? "top" : "left"
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , base = o.resizerClass
                            , lastPos = 0 // used when live-resizing
                            , r, live // set in start because may change
                            // 'drag' classes are applied to the ORIGINAL resizer-bar while dragging is in process
                            , resizerClass = base + "-drag"    // resizer-drag
                            , resizerPaneClass = base + "-" + pane + "-drag"  // resizer-north-drag
                            // 'helper' class is applied to the CLONED resizer-bar while it is being dragged
                            , helperClass = base + "-dragging"   // resizer-dragging
                            , helperPaneClass = base + "-" + pane + "-dragging" // resizer-north-dragging
                            , helperLimitClass = base + "-dragging-limit" // resizer-drag
                            , helperPaneLimitClass = base + "-" + pane + "-dragging-limit" // resizer-north-drag
                            , helperClassesSet = false      // logic var
                        ;

                        if (!s.isClosed)
                            $R.attr("title", o.tips.Resize)
                                .css("cursor", o.resizerCursor); // n-resize, s-resize, etc

                        $R.draggable({
                            containment: $N[0] // limit resizing to layout container
                            , axis: (c.dir == "horz" ? "y" : "x") // limit resizing to horz or vert axis
                            , delay: 0
                            , distance: 1
                            , grid: o.resizingGrid
                            // basic format for helper - style it using class: .ui-draggable-dragging
                            , helper: "clone"
                            , opacity: o.resizerDragOpacity
                            , addClasses: false // avoid ui-state-disabled class when disabled
                            //, iframeFix:  o.draggableIframeFix // TODO: consider using when bug is fixed
                            , zIndex: z.resizer_drag

                            , start: function (e, ui) {
                                // REFRESH options & state pointers in case we used swapPanes
                                o = options[pane];
                                s = state[pane];
                                // re-read options
                                live = o.livePaneResizing;

                                // ondrag_start callback - will CANCEL hide if returns false
                                // TODO: dragging CANNOT be cancelled like this, so see if there is a way?
                                if (false === _runCallbacks("ondrag_start", pane))
                                    return false;

                                s.isResizing = true; // prevent pane from closing while resizing
                                state.paneResizing = pane; // easy to see if ANY pane is resizing
                                timer.clear(pane + "_closeSlider"); // just in case already triggered

                                // SET RESIZER LIMITS - used in drag()
                                setSizeLimits(pane); // update pane/resizer state
                                r = s.resizerPosition;
                                lastPos = ui.position[side];

                                $R.addClass(resizerClass + " " + resizerPaneClass); // add drag classes
                                helperClassesSet = false; // reset logic var - see drag()

                                // MASK PANES CONTAINING IFRAMES, APPLETS OR OTHER TROUBLESOME ELEMENTS
                                showMasks(pane, {resizing: true});
                            }

                            , drag: function (e, ui) {
                                if (!helperClassesSet) { // can only add classes after clone has been added to the DOM
                                    //$(".ui-draggable-dragging")
                                    ui.helper
                                        .addClass(helperClass + " " + helperPaneClass) // add helper classes
                                        .css({right: "auto", bottom: "auto"}) // fix dir="rtl" issue
                                        .children().css("visibility", "hidden") // hide toggler inside dragged resizer-bar
                                    ;
                                    helperClassesSet = true;
                                    // draggable bug!? RE-SET zIndex to prevent E/W resize-bar showing through N/S pane!
                                    if (s.isSliding)
                                        $Ps[pane].css("zIndex", z.pane_sliding);
                                }
                                // CONTAIN RESIZER-BAR TO RESIZING LIMITS
                                var limit = 0;
                                if (ui.position[side] < r.min) {
                                    ui.position[side] = r.min;
                                    limit = -1;
                                } else if (ui.position[side] > r.max) {
                                    ui.position[side] = r.max;
                                    limit = 1;
                                }
                                // ADD/REMOVE dragging-limit CLASS
                                if (limit) {
                                    ui.helper.addClass(helperLimitClass + " " + helperPaneLimitClass); // at dragging-limit
                                    window.defaultStatus = (limit > 0 && pane.match(/(north|west)/)) || (limit < 0 && pane.match(/(south|east)/)) ? o.tips.maxSizeWarning : o.tips.minSizeWarning;
                                } else {
                                    ui.helper.removeClass(helperLimitClass + " " + helperPaneLimitClass); // not at dragging-limit
                                    window.defaultStatus = "";
                                }
                                // DYNAMICALLY RESIZE PANES IF OPTION ENABLED
                                // won't trigger unless resizer has actually moved!
                                if (live && Math.abs(ui.position[side] - lastPos) >= o.liveResizingTolerance) {
                                    lastPos = ui.position[side];
                                    resizePanes(e, ui, pane)
                                }
                            }

                            , stop: function (e, ui) {
                                $('body').enableSelection(); // RE-ENABLE TEXT SELECTION
                                window.defaultStatus = ""; // clear 'resizing limit' message from statusbar
                                $R.removeClass(resizerClass + " " + resizerPaneClass); // remove drag classes from Resizer
                                s.isResizing = false;
                                state.paneResizing = false; // easy to see if ANY pane is resizing
                                resizePanes(e, ui, pane, true); // true = resizingDone
                            }

                        });
                    });

                    /**
                     * resizePanes
                     *
                     * Sub-routine called from stop() - and drag() if livePaneResizing
                     *
                     * @param {!Object}  evt
                     * @param {!Object}  ui
                     * @param {string}  pane
                     * @param {boolean=}  [resizingDone=false]
                     */
                    var resizePanes = function (evt, ui, pane, resizingDone) {
                        var dragPos = ui.position
                            , c = _c[pane]
                            , o = options[pane]
                            , s = state[pane]
                            , resizerPos
                        ;
                        switch (pane) {
                            case "north":
                                resizerPos = dragPos.top;
                                break;
                            case "west":
                                resizerPos = dragPos.left;
                                break;
                            case "south":
                                resizerPos = sC.layoutHeight - dragPos.top - o.spacing_open;
                                break;
                            case "east":
                                resizerPos = sC.layoutWidth - dragPos.left - o.spacing_open;
                                break;
                        }
                        // remove container margin from resizer position to get the pane size
                        var newSize = resizerPos - sC.inset[c.side];

                        // Disable OR Resize Mask(s) created in drag.start
                        if (!resizingDone) {
                            // ensure we meet liveResizingTolerance criteria
                            if (Math.abs(newSize - s.size) < o.liveResizingTolerance)
                                return; // SKIP resize this time
                            // resize the pane
                            manualSizePane(pane, newSize, false, true); // true = noAnimation
                            sizeMasks(); // resize all visible masks
                        } else { // resizingDone
                            // ondrag_end callback
                            if (false !== _runCallbacks("ondrag_end", pane))
                                manualSizePane(pane, newSize, false, true); // true = noAnimation
                            hideMasks(true); // true = force hiding all masks even if one is 'sliding'
                            if (s.isSliding) // RE-SHOW 'object-masks' so objects won't show through sliding pane
                                showMasks(pane, {resizing: true});
                        }
                    };
                }

                /**
                 * sizeMask
                 *
                 * Needed to overlay a DIV over an IFRAME-pane because mask CANNOT be *inside* the pane
                 * Called when mask created, and during livePaneResizing
                 */
                , sizeMask = function () {
                    var $M = $(this)
                        , pane = $M.data("layoutMask") // eg: "west"
                        , s = state[pane]
                    ;
                    // only masks over an IFRAME-pane need manual resizing
                    if (s.tagName == "IFRAME" && s.isVisible) // no need to mask closed/hidden panes
                        $M.css({
                            top: s.offsetTop
                            , left: s.offsetLeft
                            , width: s.outerWidth
                            , height: s.outerHeight
                        });
                    /* ALT Method...
             var $P = $Ps[pane];
             $M.css( $P.position() ).css({ width: $P[0].offsetWidth, height: $P[0].offsetHeight });
             */
                }
                , sizeMasks = function () {
                    $Ms.each(sizeMask); // resize all 'visible' masks
                }

                /**
                 * @param {string} pane  The pane being resized, animated or isSliding
                 * @param {Object=} [args]  (optional) Options: which masks to apply, and to which panes
                 */
                , showMasks = function (pane, args) {
                    var c = _c[pane]
                        , panes = ["center"]
                        , z = options.zIndexes
                        , a = $.extend({
                            objectsOnly: false
                            , animation: false
                            , resizing: true
                            , sliding: state[pane].isSliding
                        }, args)
                        , o, s
                    ;
                    if (a.resizing)
                        panes.push(pane);
                    if (a.sliding)
                        panes.push(_c.oppositeEdge[pane]); // ADD the oppositeEdge-pane

                    if (c.dir === "horz") {
                        panes.push("west");
                        panes.push("east");
                    }

                    $.each(panes, function (i, p) {
                        s = state[p];
                        o = options[p];
                        if (s.isVisible && (o.maskObjects || (!a.objectsOnly && o.maskContents))) {
                            getMasks(p).each(function () {
                                sizeMask.call(this);
                                this.style.zIndex = s.isSliding ? z.pane_sliding + 1 : z.pane_normal + 1;
                                this.style.display = "block";
                            });
                        }
                    });
                }

                /**
                 * @param {boolean=} force  Hide masks even if a pane is sliding
                 */
                , hideMasks = function (force) {
                    // ensure no pane is resizing - could be a timing issue
                    if (force || !state.paneResizing) {
                        $Ms.hide(); // hide ALL masks
                    }
                    // if ANY pane is sliding, then DO NOT remove masks from panes with maskObjects enabled
                    else if (!force && !$.isEmptyObject(state.panesSliding)) {
                        var i = $Ms.length - 1
                            , p, $M;
                        for (; i >= 0; i--) {
                            $M = $Ms.eq(i);
                            p = $M.data("layoutMask");
                            if (!options[p].maskObjects) {
                                $M.hide();
                            }
                        }
                    }
                }

                /**
                 * @param {string} pane
                 */
                , getMasks = function (pane) {
                    var $Masks = $([])
                        , $M, i = 0, c = $Ms.length
                    ;
                    for (; i < c; i++) {
                        $M = $Ms.eq(i);
                        if ($M.data("layoutMask") === pane)
                            $Masks = $Masks.add($M);
                    }
                    if ($Masks.length)
                        return $Masks;
                    else
                        return createMasks(pane);
                }

                /**
                 * createMasks
                 *
                 * Generates both DIV (ALWAYS used) and IFRAME (optional) elements as masks
                 * An IFRAME mask is created *under* the DIV when maskObjects=true, because a DIV cannot mask an applet
                 *
                 * @param {string} pane
                 */
                , createMasks = function (pane) {
                    var
                        $P = $Ps[pane]
                        , s = state[pane]
                        , o = options[pane]
                        , z = options.zIndexes
                        , isIframe, el, $M, css, i
                    ;
                    if (!o.maskContents && !o.maskObjects)
                        return $([]);
                    // if o.maskObjects=true, then loop TWICE to create BOTH kinds of mask, else only create a DIV
                    for (i = 0; i < (o.maskObjects ? 2 : 1); i++) {
                        isIframe = o.maskObjects && i == 0;
                        el = document.createElement(isIframe ? "iframe" : "div");
                        $M = $(el).data("layoutMask", pane); // add data to relate mask to pane
                        el.className = "ui-layout-mask ui-layout-mask-" + pane; // for user styling
                        css = el.style;
                        // Both DIVs and IFRAMES
                        css.background = "#FFF";
                        css.position = "absolute";
                        css.display = "block";
                        if (isIframe) { // IFRAME-only props
                            el.src = "about:blank";
                            el.frameborder = 0;
                            css.border = 0;
                            css.opacity = 0;
                            css.filter = "Alpha(Opacity='0')";
                            //el.allowTransparency = true; - for IE, but breaks masking ability!
                        } else { // DIV-only props
                            css.opacity = 0.001;
                            css.filter = "Alpha(Opacity='1')";
                        }
                        // if pane IS an IFRAME, then must mask the pane itself
                        if (s.tagName == "IFRAME") {
                            // NOTE sizing done by a subroutine so can be called during live-resizing
                            css.zIndex = z.pane_normal + 1; // 1-higher than pane
                            $N.append(el); // append to LAYOUT CONTAINER
                        }
                        // otherwise put masks *inside the pane* to mask its contents
                        else {
                            $M.addClass("ui-layout-mask-inside-pane");
                            css.zIndex = o.maskZindex || z.content_mask; // usually 1, but customizable
                            css.top = 0;
                            css.left = 0;
                            css.width = "100%";
                            css.height = "100%";
                            $P.append(el); // append INSIDE pane element
                        }
                        // add Mask to cached array so can be resized & reused
                        $Ms = $Ms.add(el);
                    }
                    return $Ms;
                }


                /**
                 * Destroy this layout and reset all elements
                 *
                 * @param {boolean=} [destroyChildren=false]  Destory Child-Layouts first?
                 */
                , destroy = function (evt_or_destroyChildren, destroyChildren) {
                    // UNBIND layout events and remove global object
                    $(window).off("." + sID);  // resize & unload
                    $(document).off("." + sID); // keyDown (hotkeys)

                    if (typeof evt_or_destroyChildren === "object")
                    // stopPropagation if called by trigger("layoutdestroy") - use evtPane utility
                        evtPane(evt_or_destroyChildren);
                    else // no event, so transfer 1st param to destroyChildren param
                        destroyChildren = evt_or_destroyChildren;

                    // need to look for parent layout BEFORE we remove the container data, else skips a level
                    //var parentPane = Instance.hasParentLayout ? $.layout.getParentPaneInstance( $N ) : null;

                    // reset layout-container
                    $N.clearQueue()
                        .removeData("layout")
                        .removeData("layoutContainer")
                        .removeClass(options.containerClass)
                        .off("." + sID) // remove ALL Layout events
                    ;

                    // remove all mask elements that have been created
                    $Ms.remove();

                    // loop all panes to remove layout classes, attributes and bindings
                    $.each(_c.allPanes, function (i, pane) {
                        removePane(pane, false, true, destroyChildren); // true = skipResize
                    });

                    // do NOT reset container CSS if is a 'pane' (or 'content') in an outer-layout - ie, THIS layout is 'nested'
                    var css = "layoutCSS";
                    if ($N.data(css) && !$N.data("layoutRole")) // RESET CSS
                        $N.css($N.data(css)).removeData(css);

                    // for full-page layouts, also reset the <HTML> CSS
                    if (sC.tagName === "BODY" && ($N = $("html")).data(css)) // RESET <HTML> CSS
                        $N.css($N.data(css)).removeData(css);

                    // trigger plugins for this layout, if there are any
                    runPluginCallbacks(Instance, $.layout.onDestroy);

                    // trigger state-management and onunload callback
                    unload();

                    // clear the Instance of everything except for container & options (so could recreate)
                    // RE-CREATE: myLayout = myLayout.container.layout( myLayout.options );
                    for (var n in Instance)
                        if (!n.match(/^(container|options)$/))
                            delete Instance[n];
                    // add a 'destroyed' flag to make it easy to check
                    Instance.destroyed = true;

                    // if this is a child layout, CLEAR the child-pointer in the parent
                    /* for now the pointer REMAINS, but with only container, options and destroyed keys
             if (parentPane) {
             var layout = parentPane.pane.data("parentLayout")
             , key  = layout.options.instanceKey || 'error';
             // THIS SYNTAX MAY BE WRONG!
             parentPane.children[key] = layout.children[ parentPane.name ].children[key] = null;
             }
             */

                    return Instance; // for coding convenience
                }

                /**
                 * Remove a pane from the layout - subroutine of destroy()
                 *
                 * @see  destroy()
                 * @param {(string|Object)} evt_or_pane   The pane to process
                 * @param {boolean=}   [remove=false]  Remove the DOM element?
                 * @param {boolean=}   [skipResize=false] Skip calling resizeAll()?
                 * @param {boolean=}   [destroyChild=true] Destroy Child-layouts? If not passed, obeys options setting
                 */
                , removePane = function (evt_or_pane, remove, skipResize, destroyChild) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , $P = $Ps[pane]
                        , $C = $Cs[pane]
                        , $R = $Rs[pane]
                        , $T = $Ts[pane]
                    ;
                    // NOTE: elements can still exist even after remove()
                    //  so check for missing data(), which is cleared by removed()
                    if ($P && $.isEmptyObject($P.data()))
                        $P = false;
                    if ($C && $.isEmptyObject($C.data()))
                        $C = false;
                    if ($R && $.isEmptyObject($R.data()))
                        $R = false;
                    if ($T && $.isEmptyObject($T.data()))
                        $T = false;

                    if ($P)
                        $P.stop(true, true);

                    var o = options[pane]
                        , s = state[pane]
                        , d = "layout"
                        , css = "layoutCSS"
                        , pC = children[pane]
                        , hasChildren = $.isPlainObject(pC) && !$.isEmptyObject(pC)
                        , destroy = destroyChild !== undefined ? destroyChild : o.destroyChildren
                    ;
                    // FIRST destroy the child-layout(s)
                    if (hasChildren && destroy) {
                        $.each(pC, function (key, child) {
                            if (!child.destroyed)
                                child.destroy(true);// tell child-layout to destroy ALL its child-layouts too
                            if (child.destroyed) // destroy was successful
                                delete pC[key];
                        });
                        // if no more children, remove the children hash
                        if ($.isEmptyObject(pC)) {
                            pC = children[pane] = null; // clear children hash
                            hasChildren = false;
                        }
                    }

                    // Note: can't 'remove' a pane element with non-destroyed children
                    if ($P && remove && !hasChildren)
                        $P.remove(); // remove the pane-element and everything inside it
                    else if ($P && $P[0]) {
                        // create list of ALL pane-classes that need to be removed
                        var root = o.paneClass // default="ui-layout-pane"
                            , pRoot = root + "-" + pane // eg: "ui-layout-pane-west"
                            , _open = "-open"
                            , _sliding = "-sliding"
                            , _closed = "-closed"
                            , classes = [root, root + _open, root + _closed, root + _sliding, // generic classes
                            pRoot, pRoot + _open, pRoot + _closed, pRoot + _sliding] // pane-specific classes
                        ;
                        $.merge(classes, getHoverClasses($P, true)); // ADD hover-classes
                        // remove all Layout classes from pane-element
                        $P.removeClass(classes.join(" ")) // remove ALL pane-classes
                            .removeData("parentLayout")
                            .removeData("layoutPane")
                            .removeData("layoutRole")
                            .removeData("layoutEdge")
                            .removeData("autoHidden") // in case set
                            .off("." + sID) // remove ALL Layout events
                        // TODO: remove these extra unbind commands when jQuery is fixed
                        //.unbind("mouseenter"+ sID)
                        //.unbind("mouseleave"+ sID)
                        ;
                        // do NOT reset CSS if this pane/content is STILL the container of a nested layout!
                        // the nested layout will reset its 'container' CSS when/if it is destroyed
                        if (hasChildren && $C) {
                            // a content-div may not have a specific width, so give it one to contain the Layout
                            $C.width($C.width());
                            $.each(pC, function (key, child) {
                                child.resizeAll(); // resize the Layout
                            });
                        } else if ($C)
                            $C.css($C.data(css)).removeData(css).removeData("layoutRole");
                        // remove pane AFTER content in case there was a nested layout
                        if (!$P.data(d))
                            $P.css($P.data(css)).removeData(css);
                    }

                    // REMOVE pane resizer and toggler elements
                    if ($T)
                        $T.remove();
                    if ($R)
                        $R.remove();

                    // CLEAR all pointers and state data
                    Instance[pane] = $Ps[pane] = $Cs[pane] = $Rs[pane] = $Ts[pane] = false;
                    s = {removed: true};

                    if (!skipResize)
                        resizeAll();
                }


                /*
         * ###########################
         *    ACTION METHODS
         * ###########################
         */

                /**
                 * @param {string} pane
                 */
                , _hidePane = function (pane) {
                    var $P = $Ps[pane]
                        , o = options[pane]
                        , s = $P[0].style
                    ;
                    if (o.useOffscreenClose) {
                        if (!$P.data(_c.offscreenReset))
                            $P.data(_c.offscreenReset, {left: s.left, right: s.right});
                        $P.css(_c.offscreenCSS);
                    } else
                        $P.hide().removeData(_c.offscreenReset);
                }

                /**
                 * @param {string} pane
                 */
                , _showPane = function (pane) {
                    var $P = $Ps[pane]
                        , o = options[pane]
                        , off = _c.offscreenCSS
                        , old = $P.data(_c.offscreenReset)
                        , s = $P[0].style
                    ;
                    $P.show() // ALWAYS show, just in case
                        .removeData(_c.offscreenReset);
                    if (o.useOffscreenClose && old) {
                        if (s.left == off.left)
                            s.left = old.left;
                        if (s.right == off.right)
                            s.right = old.right;
                    }
                }


                /**
                 * Completely 'hides' a pane, including its spacing - as if it does not exist
                 * The pane is not actually 'removed' from the source, so can use 'show' to un-hide it
                 *
                 * @param {(string|Object)} evt_or_pane   The pane being hidden, ie: north, south, east, or west
                 * @param {boolean=}   [noAnimation=false]
                 */
                , hide = function (evt_or_pane, noAnimation) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , o = options[pane]
                        , s = state[pane]
                        , $P = $Ps[pane]
                        , $R = $Rs[pane]
                    ;
                    if (pane === "center" || !$P || s.isHidden)
                        return; // pane does not exist OR is already hidden

                    // onhide_start callback - will CANCEL hide if returns false
                    if (state.initialized && false === _runCallbacks("onhide_start", pane))
                        return;

                    s.isSliding = false; // just in case
                    delete state.panesSliding[pane];

                    // now hide the elements
                    if ($R)
                        $R.hide(); // hide resizer-bar
                    if (!state.initialized || s.isClosed) {
                        s.isClosed = true; // to trigger open-animation on show()
                        s.isHidden = true;
                        s.isVisible = false;
                        if (!state.initialized)
                            _hidePane(pane); // no animation when loading page
                        sizeMidPanes(_c[pane].dir === "horz" ? "" : "center");
                        if (state.initialized || o.triggerEventsOnLoad)
                            _runCallbacks("onhide_end", pane);
                    } else {
                        s.isHiding = true; // used by onclose
                        close(pane, false, noAnimation); // adjust all panes to fit
                    }
                }

                /**
                 * Show a hidden pane - show as 'closed' by default unless openPane = true
                 *
                 * @param {(string|Object)} evt_or_pane   The pane being opened, ie: north, south, east, or west
                 * @param {boolean=}   [openPane=false]
                 * @param {boolean=}   [noAnimation=false]
                 * @param {boolean=}   [noAlert=false]
                 */
                , show = function (evt_or_pane, openPane, noAnimation, noAlert) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , o = options[pane]
                        , s = state[pane]
                        , $P = $Ps[pane]
                        , $R = $Rs[pane]
                    ;
                    if (pane === "center" || !$P || !s.isHidden)
                        return; // pane does not exist OR is not hidden

                    // onshow_start callback - will CANCEL show if returns false
                    if (false === _runCallbacks("onshow_start", pane))
                        return;

                    s.isShowing = true; // used by onopen/onclose
                    //s.isHidden  = false; - will be set by open/close - if not cancelled
                    s.isSliding = false; // just in case
                    delete state.panesSliding[pane];

                    // now show the elements
                    //if ($R) $R.show(); - will be shown by open/close
                    if (openPane === false)
                        close(pane, true); // true = force
                    else
                        open(pane, false, noAnimation, noAlert); // adjust all panes to fit
                }


                /**
                 * Toggles a pane open/closed by calling either open or close
                 *
                 * @param {(string|Object)} evt_or_pane  The pane being toggled, ie: north, south, east, or west
                 * @param {boolean=}   [slide=false]
                 */
                , toggle = function (evt_or_pane, slide) {
                    if (!isInitialized())
                        return;
                    var evt = evtObj(evt_or_pane)
                        , pane = evtPane.call(this, evt_or_pane)
                        , s = state[pane]
                    ;
                    if (evt) // called from to $R.dblclick OR triggerPaneEvent
                        evt.stopImmediatePropagation();
                    if (s.isHidden)
                        show(pane); // will call 'open' after unhiding it
                    else if (s.isClosed)
                        open(pane, !!slide);
                    else
                        close(pane);
                }


                /**
                 * Utility method used during init or other auto-processes
                 *
                 * @param {string} pane   The pane being closed
                 * @param {boolean=} [setHandles=false]
                 */
                , _closePane = function (pane, setHandles) {
                    var
                        $P = $Ps[pane]
                        , s = state[pane]
                    ;
                    _hidePane(pane);
                    s.isClosed = true;
                    s.isVisible = false;
                    if (setHandles)
                        setAsClosed(pane);
                }

                /**
                 * Close the specified pane (animation optional), and resize all other panes as needed
                 *
                 * @param {(string|Object)} evt_or_pane   The pane being closed, ie: north, south, east, or west
                 * @param {boolean=}   [force=false]
                 * @param {boolean=}   [noAnimation=false]
                 * @param {boolean=}   [skipCallback=false]
                 */
                , close = function (evt_or_pane, force, noAnimation, skipCallback) {
                    var pane = evtPane.call(this, evt_or_pane);
                    if (pane === "center")
                        return; // validate
                    // if pane has been initialized, but NOT the complete layout, close pane instantly
                    if (!state.initialized && $Ps[pane]) {
                        _closePane(pane, true); // INIT pane as closed
                        return;
                    }
                    if (!isInitialized())
                        return;

                    var
                        $P = $Ps[pane]
                        , $R = $Rs[pane]
                        , $T = $Ts[pane]
                        , o = options[pane]
                        , s = state[pane]
                        , c = _c[pane]
                        , doFX, isShowing, isHiding, wasSliding;

                    // QUEUE in case another action/animation is in progress
                    $N.queue(function (queueNext) {

                        if (!$P
                            || (!o.closable && !s.isShowing && !s.isHiding) // invalid request // (!o.resizable && !o.closable) ???
                            || (!force && s.isClosed && !s.isShowing)   // already closed
                        )
                            return queueNext();

                        // onclose_start callback - will CANCEL hide if returns false
                        // SKIP if just 'showing' a hidden pane as 'closed'
                        var abort = !s.isShowing && false === _runCallbacks("onclose_start", pane);

                        // transfer logic vars to temp vars
                        isShowing = s.isShowing;
                        isHiding = s.isHiding;
                        wasSliding = s.isSliding;
                        // now clear the logic vars (REQUIRED before aborting)
                        delete s.isShowing;
                        delete s.isHiding;

                        if (abort)
                            return queueNext();

                        doFX = !noAnimation && !s.isClosed && (o.fxName_close != "none");
                        s.isMoving = true;
                        s.isClosed = true;
                        s.isVisible = false;
                        // update isHidden BEFORE sizing panes
                        if (isHiding)
                            s.isHidden = true;
                        else if (isShowing)
                            s.isHidden = false;

                        if (s.isSliding) // pane is being closed, so UNBIND trigger events
                            bindStopSlidingEvents(pane, false); // will set isSliding=false
                        else // resize panes adjacent to this one
                            sizeMidPanes(_c[pane].dir === "horz" ? "" : "center", false); // false = NOT skipCallback

                        // if this pane has a resizer bar, move it NOW - before animation
                        setAsClosed(pane);

                        // CLOSE THE PANE
                        if (doFX) { // animate the close
                            lockPaneForFX(pane, true); // need to set left/top so animation will work
                            $P.hide(o.fxName_close, o.fxSettings_close, o.fxSpeed_close, function () {
                                lockPaneForFX(pane, false); // undo
                                if (s.isClosed)
                                    close_2();
                                queueNext();
                            });
                        } else { // hide the pane without animation
                            _hidePane(pane);
                            close_2();
                            queueNext();
                        }
                    });

                    // SUBROUTINE
                    function close_2() {
                        s.isMoving = false;
                        bindStartSlidingEvents(pane, true); // will enable if o.slidable = true

                        // if opposite-pane was autoClosed, see if it can be autoOpened now
                        var altPane = _c.oppositeEdge[pane];
                        if (state[altPane].noRoom) {
                            setSizeLimits(altPane);
                            makePaneFit(altPane);
                        }

                        if (!skipCallback && (state.initialized || o.triggerEventsOnLoad)) {
                            // onclose callback - UNLESS just 'showing' a hidden pane as 'closed'
                            if (!isShowing)
                                _runCallbacks("onclose_end", pane);
                            // onhide OR onshow callback
                            if (isShowing)
                                _runCallbacks("onshow_end", pane);
                            if (isHiding)
                                _runCallbacks("onhide_end", pane);
                        }
                    }
                }

                /**
                 * @param {string} pane The pane just closed, ie: north, south, east, or west
                 */
                , setAsClosed = function (pane) {
                    if (!$Rs[pane])
                        return; // handles not initialized yet!
                    var
                        $P = $Ps[pane]
                        , $R = $Rs[pane]
                        , $T = $Ts[pane]
                        , o = options[pane]
                        , s = state[pane]
                        , side = _c[pane].side
                        , rClass = o.resizerClass
                        , tClass = o.togglerClass
                        , _pane = "-" + pane // used for classNames
                        , _open = "-open"
                        , _sliding = "-sliding"
                        , _closed = "-closed"
                    ;
                    $R
                        .css(side, sC.inset[side]) // move the resizer
                        .removeClass(rClass + _open + " " + rClass + _pane + _open)
                        .removeClass(rClass + _sliding + " " + rClass + _pane + _sliding)
                        .addClass(rClass + _closed + " " + rClass + _pane + _closed)
                    ;
                    // handle already-hidden panes in case called by swap() or a similar method
                    if (s.isHidden)
                        $R.hide(); // hide resizer-bar

                    // DISABLE 'resizing' when closed - do this BEFORE bindStartSlidingEvents?
                    if (o.resizable && $.layout.plugins.draggable)
                        $R
                            .draggable("disable")
                            .removeClass("ui-state-disabled") // do NOT apply disabled styling - not suitable here
                            .css("cursor", "default")
                            .attr("title", "")
                        ;

                    // if pane has a toggler button, adjust that too
                    if ($T) {
                        $T
                            .removeClass(tClass + _open + " " + tClass + _pane + _open)
                            .addClass(tClass + _closed + " " + tClass + _pane + _closed)
                            .attr("title", o.tips.Open) // may be blank
                        ;
                        // toggler-content - if exists
                        $T.children(".content-open").hide();
                        $T.children(".content-closed").css("display", "block");
                    }

                    // sync any 'pin buttons'
                    syncPinBtns(pane, false);

                    if (state.initialized) {
                        // resize 'length' and position togglers for adjacent panes
                        sizeHandles();
                    }
                }

                /**
                 * Open the specified pane (animation optional), and resize all other panes as needed
                 *
                 * @param {(string|Object)} evt_or_pane   The pane being opened, ie: north, south, east, or west
                 * @param {boolean=}   [slide=false]
                 * @param {boolean=}   [noAnimation=false]
                 * @param {boolean=}   [noAlert=false]
                 */
                , open = function (evt_or_pane, slide, noAnimation, noAlert) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , $P = $Ps[pane]
                        , $R = $Rs[pane]
                        , $T = $Ts[pane]
                        , o = options[pane]
                        , s = state[pane]
                        , c = _c[pane]
                        , doFX, isShowing
                    ;
                    if (pane === "center")
                        return; // validate
                    // QUEUE in case another action/animation is in progress
                    $N.queue(function (queueNext) {

                        if (!$P
                            || (!o.resizable && !o.closable && !s.isShowing) // invalid request
                            || (s.isVisible && !s.isSliding)     // already open
                        )
                            return queueNext();

                        // pane can ALSO be unhidden by just calling show(), so handle this scenario
                        if (s.isHidden && !s.isShowing) {
                            queueNext(); // call before show() because it needs the queue free
                            show(pane, true);
                            return;
                        }

                        if (s.autoResize && s.size != o.size) // resize pane to original size set in options
                            sizePane(pane, o.size, true, true, true); // true=skipCallback/noAnimation/forceResize
                        else
                        // make sure there is enough space available to open the pane
                            setSizeLimits(pane, slide);

                        // onopen_start callback - will CANCEL open if returns false
                        var cbReturn = _runCallbacks("onopen_start", pane);

                        if (cbReturn === "abort")
                            return queueNext();

                        // update pane-state again in case options were changed in onopen_start
                        if (cbReturn !== "NC") // NC = "No Callback"
                            setSizeLimits(pane, slide);

                        if (s.minSize > s.maxSize) { // INSUFFICIENT ROOM FOR PANE TO OPEN!
                            syncPinBtns(pane, false); // make sure pin-buttons are reset
                            if (!noAlert && o.tips.noRoomToOpen)
                                alert(o.tips.noRoomToOpen);
                            return queueNext(); // ABORT
                        }

                        if (slide) // START Sliding - will set isSliding=true
                            bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
                        else if (s.isSliding) // PIN PANE (stop sliding) - open pane 'normally' instead
                            bindStopSlidingEvents(pane, false); // UNBIND trigger events - will set isSliding=false
                        else if (o.slidable)
                            bindStartSlidingEvents(pane, false); // UNBIND trigger events

                        s.noRoom = false; // will be reset by makePaneFit if 'noRoom'
                        makePaneFit(pane);

                        // transfer logic var to temp var
                        isShowing = s.isShowing;
                        // now clear the logic var
                        delete s.isShowing;

                        doFX = !noAnimation && s.isClosed && (o.fxName_open != "none");
                        s.isMoving = true;
                        s.isVisible = true;
                        s.isClosed = false;
                        // update isHidden BEFORE sizing panes - WHY??? Old?
                        if (isShowing)
                            s.isHidden = false;

                        if (doFX) { // ANIMATE
                            // mask adjacent panes with objects
                            lockPaneForFX(pane, true); // need to set left/top so animation will work
                            $P.show(o.fxName_open, o.fxSettings_open, o.fxSpeed_open, function () {
                                lockPaneForFX(pane, false); // undo
                                if (s.isVisible)
                                    open_2(); // continue
                                queueNext();
                            });
                        } else { // no animation
                            _showPane(pane);// just show pane and...
                            open_2();  // continue
                            queueNext();
                        }
                    });

                    // SUBROUTINE
                    function open_2() {
                        s.isMoving = false;

                        // cure iframe display issues
                        _fixIframe(pane);

                        // NOTE: if isSliding, then other panes are NOT 'resized'
                        if (!s.isSliding) { // resize all panes adjacent to this one
                            sizeMidPanes(_c[pane].dir == "vert" ? "center" : "", false); // false = NOT skipCallback
                        }

                        // set classes, position handles and execute callbacks...
                        setAsOpen(pane);
                    }
                }

                /**
                 * @param {string} pane  The pane just opened, ie: north, south, east, or west
                 * @param {boolean=} [skipCallback=false]
                 */
                , setAsOpen = function (pane, skipCallback) {
                    var
                        $P = $Ps[pane]
                        , $R = $Rs[pane]
                        , $T = $Ts[pane]
                        , o = options[pane]
                        , s = state[pane]
                        , side = _c[pane].side
                        , rClass = o.resizerClass
                        , tClass = o.togglerClass
                        , _pane = "-" + pane // used for classNames
                        , _open = "-open"
                        , _closed = "-closed"
                        , _sliding = "-sliding"
                    ;
                    $R
                        .css(side, sC.inset[side] + getPaneSize(pane)) // move the resizer
                        .removeClass(rClass + _closed + " " + rClass + _pane + _closed)
                        .addClass(rClass + _open + " " + rClass + _pane + _open)
                    ;
                    if (s.isSliding)
                        $R.addClass(rClass + _sliding + " " + rClass + _pane + _sliding);
                    else // in case 'was sliding'
                        $R.removeClass(rClass + _sliding + " " + rClass + _pane + _sliding);

                    removeHover(0, $R); // remove hover classes
                    if (o.resizable && $.layout.plugins.draggable)
                        $R.draggable("enable")
                            .css("cursor", o.resizerCursor)
                            .attr("title", o.tips.Resize);
                    else if (!s.isSliding)
                        $R.css("cursor", "default"); // n-resize, s-resize, etc

                    // if pane also has a toggler button, adjust that too
                    if ($T) {
                        $T.removeClass(tClass + _closed + " " + tClass + _pane + _closed)
                            .addClass(tClass + _open + " " + tClass + _pane + _open)
                            .attr("title", o.tips.Close); // may be blank
                        removeHover(0, $T); // remove hover classes
                        // toggler-content - if exists
                        $T.children(".content-closed").hide();
                        $T.children(".content-open").css("display", "block");
                    }

                    // sync any 'pin buttons'
                    syncPinBtns(pane, !s.isSliding);

                    // update pane-state dimensions - BEFORE resizing content
                    $.extend(s, elDims($P));

                    if (state.initialized) {
                        // resize resizer & toggler sizes for all panes
                        sizeHandles();
                        // resize content every time pane opens - to be sure
                        sizeContent(pane, true); // true = remeasure headers/footers, even if 'pane.isMoving'
                    }

                    if (!skipCallback && (state.initialized || o.triggerEventsOnLoad) && $P.is(":visible")) {
                        // onopen callback
                        _runCallbacks("onopen_end", pane);
                        // onshow callback - TODO: should this be here?
                        if (s.isShowing)
                            _runCallbacks("onshow_end", pane);

                        // ALSO call onresize because layout-size *may* have changed while pane was closed
                        if (state.initialized)
                            _runCallbacks("onresize_end", pane);
                    }

                    // TODO: Somehow sizePane("north") is being called after this point???
                }


                /**
                 * slideOpen / slideClose / slideToggle
                 *
                 * Pass-though methods for sliding
                 */
                , slideOpen = function (evt_or_pane) {
                    if (!isInitialized())
                        return;
                    var evt = evtObj(evt_or_pane)
                        , pane = evtPane.call(this, evt_or_pane)
                        , s = state[pane]
                        , delay = options[pane].slideDelay_open
                    ;
                    if (pane === "center")
                        return; // validate
                    // prevent event from triggering on NEW resizer binding created below
                    if (evt)
                        evt.stopImmediatePropagation();

                    if (s.isClosed && evt && evt.type === "mouseenter" && delay > 0)
                    // trigger = mouseenter - use a delay
                        timer.set(pane + "_openSlider", open_NOW, delay);
                    else
                        open_NOW(); // will unbind events if is already open

                    /**
                     * SUBROUTINE for timed open
                     */
                    function open_NOW() {
                        if (!s.isClosed) // skip if no longer closed!
                            bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
                        else if (!s.isMoving)
                            open(pane, true); // true = slide - open() will handle binding
                    }
                }

                , slideClose = function (evt_or_pane) {
                    if (!isInitialized())
                        return;
                    var evt = evtObj(evt_or_pane)
                        , pane = evtPane.call(this, evt_or_pane)
                        , o = options[pane]
                        , s = state[pane]
                        , delay = s.isMoving ? 1000 : 300 // MINIMUM delay - option may override
                    ;
                    if (pane === "center")
                        return; // validate
                    if (s.isClosed || s.isResizing) {
                         // skip if already closed OR in process of resizing
                    }
                    else if (o.slideTrigger_close === "click")
                        close_NOW(); // close immediately onClick
                    else if (o.preventQuickSlideClose && s.isMoving) {
                         // handle Chrome quick-close on slide-open
                    }
                    else if (o.preventPrematureSlideClose && evt && $.layout.isMouseOverElem(evt, $Ps[pane])) {
                         // handle incorrect mouseleave trigger, like when over a SELECT-list in IE
                    }
                    else if (evt) // trigger = mouseleave - use a delay
                    // 1 sec delay if 'opening', else .3 sec
                        timer.set(pane + "_closeSlider", close_NOW, max(o.slideDelay_close, delay));
                    else // called programically
                        close_NOW();

                    /**
                     * SUBROUTINE for timed close
                     */
                    function close_NOW() {
                        if (s.isClosed) // skip 'close' if already closed!
                            bindStopSlidingEvents(pane, false); // UNBIND trigger events - TODO: is this needed here?
                        else if (!s.isMoving)
                            close(pane); // close will handle unbinding
                    }
                }

                /**
                 * @param {(string|Object)} evt_or_pane  The pane being opened, ie: north, south, east, or west
                 */
                , slideToggle = function (evt_or_pane) {
                    var pane = evtPane.call(this, evt_or_pane);
                    toggle(pane, true);
                }


                /**
                 * Must set left/top on East/South panes so animation will work properly
                 *
                 * @param {string} pane The pane to lock, 'east' or 'south' - any other is ignored!
                 * @param {boolean} doLock  true = set left/top, false = remove
                 */
                , lockPaneForFX = function (pane, doLock) {
                    var $P = $Ps[pane]
                        , s = state[pane]
                        , o = options[pane]
                        , z = options.zIndexes
                    ;
                    if (doLock) {
                        showMasks(pane, {animation: true, objectsOnly: true});
                        $P.css({zIndex: z.pane_animate}); // overlay all elements during animation
                        if (pane == "south")
                            $P.css({top: sC.inset.top + sC.innerHeight - $P.outerHeight()});
                        else if (pane == "east")
                            $P.css({left: sC.inset.left + sC.innerWidth - $P.outerWidth()});
                    } else { // animation DONE - RESET CSS
                        hideMasks();
                        $P.css({zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal)});
                        if (pane == "south")
                            $P.css({top: "auto"});
                        // if pane is positioned 'off-screen', then DO NOT screw with it!
                        else if (pane == "east" && !$P.css("left").match(/\-99999/))
                            $P.css({left: "auto"});
                        // fix anti-aliasing in IE - only needed for animations that change opacity
                        if (browser.msie && o.fxOpacityFix && o.fxName_open != "slide" && $P.css("filter") && $P.css("opacity") == 1)
                            $P[0].style.removeAttribute('filter');
                    }
                }


                /**
                 * Toggle sliding functionality of a specific pane on/off by adding removing 'slide open' trigger
                 *
                 * @see  open(), close()
                 * @param {string} pane The pane to enable/disable, 'north', 'south', etc.
                 * @param {boolean} enable Enable or Disable sliding?
                 */
                , bindStartSlidingEvents = function (pane, enable) {
                    var o = options[pane]
                        , $P = $Ps[pane]
                        , $R = $Rs[pane]
                        , evtName = o.slideTrigger_open.toLowerCase()
                    ;
                    if (!$R || (enable && !o.slidable))
                        return;

                    // make sure we have a valid event
                    if (evtName.match(/mouseover/))
                        evtName = o.slideTrigger_open = "mouseenter";
                    else if (!evtName.match(/(click|dblclick|mouseenter)/))
                        evtName = o.slideTrigger_open = "click";

                    // must remove double-click-toggle when using dblclick-slide
                    if (o.resizerDblClickToggle && evtName.match(/click/)) {
                        $R[enable ? "unbind" : "bind"]('dblclick.' + sID, toggle)
                    }

                    $R
                        // add or remove event
                        [enable ? "bind" : "unbind"](evtName + '.' + sID, slideOpen)
                    // set the appropriate cursor & title/tip
                        .css("cursor", enable ? o.sliderCursor : "default")
                        .attr("title", enable ? o.tips.Slide : "")
                    ;
                }

                /**
                 * Add or remove 'mouseleave' events to 'slide close' when pane is 'sliding' open or closed
                 * Also increases zIndex when pane is sliding open
                 * See bindStartSlidingEvents for code to control 'slide open'
                 *
                 * @see  slideOpen(), slideClose()
                 * @param {string} pane The pane to process, 'north', 'south', etc.
                 * @param {boolean} enable Enable or Disable events?
                 */
                , bindStopSlidingEvents = function (pane, enable) {
                    var o = options[pane]
                        , s = state[pane]
                        , c = _c[pane]
                        , z = options.zIndexes
                        , evtName = o.slideTrigger_close.toLowerCase()
                        , action = (enable ? "bind" : "unbind")
                        , $P = $Ps[pane]
                        , $R = $Rs[pane]
                    ;
                    timer.clear(pane + "_closeSlider"); // just in case

                    if (enable) {
                        s.isSliding = true;
                        state.panesSliding[pane] = true;
                        // remove 'slideOpen' event from resizer
                        // ALSO will raise the zIndex of the pane & resizer
                        bindStartSlidingEvents(pane, false);
                    } else {
                        s.isSliding = false;
                        delete state.panesSliding[pane];
                    }

                    // RE/SET zIndex - increases when pane is sliding-open, resets to normal when not
                    $P.css("zIndex", enable ? z.pane_sliding : z.pane_normal);
                    $R.css("zIndex", enable ? z.pane_sliding + 2 : z.resizer_normal); // NOTE: mask = pane_sliding+1

                    // make sure we have a valid event
                    if (!evtName.match(/(click|mouseleave)/))
                        evtName = o.slideTrigger_close = "mouseleave"; // also catches 'mouseout'

                    // add/remove slide triggers
                    $R[action](evtName, slideClose); // base event on resize
                    // need extra events for mouseleave
                    if (evtName === "mouseleave") {
                        // also close on pane.mouseleave
                        $P[action]("mouseleave." + sID, slideClose);
                        // cancel timer when mouse moves between 'pane' and 'resizer'
                        $R[action]("mouseenter." + sID, cancelMouseOut);
                        $P[action]("mouseenter." + sID, cancelMouseOut);
                    }

                    if (!enable)
                        timer.clear(pane + "_closeSlider");
                    else if (evtName === "click" && !o.resizable) {
                        // IF pane is not resizable (which already has a cursor and tip)
                        // then set the a cursor & title/tip on resizer when sliding
                        $R.css("cursor", enable ? o.sliderCursor : "default");
                        $R.attr("title", enable ? o.tips.Close : ""); // use Toggler-tip, eg: "Close Pane"
                    }

                    // SUBROUTINE for mouseleave timer clearing
                    function cancelMouseOut(evt) {
                        timer.clear(pane + "_closeSlider");
                        evt.stopPropagation();
                    }
                }


                /**
                 * Hides/closes a pane if there is insufficient room - reverses this when there is room again
                 * MUST have already called setSizeLimits() before calling this method
                 *
                 * @param {string} pane     The pane being resized
                 * @param {boolean=} [isOpening=false]  Called from onOpen?
                 * @param {boolean=} [skipCallback=false] Should the onresize callback be run?
                 * @param {boolean=} [force=false]
                 */
                , makePaneFit = function (pane, isOpening, skipCallback, force) {
                    var o = options[pane]
                        , s = state[pane]
                        , c = _c[pane]
                        , $P = $Ps[pane]
                        , $R = $Rs[pane]
                        , isSidePane = c.dir === "vert"
                        , hasRoom = false
                    ;
                    // special handling for center & east/west panes
                    if (pane === "center" || (isSidePane && s.noVerticalRoom)) {
                        // see if there is enough room to display the pane
                        // ERROR: hasRoom = s.minHeight <= s.maxHeight && (isSidePane || s.minWidth <= s.maxWidth);
                        hasRoom = (s.maxHeight >= 0);
                        if (hasRoom && s.noRoom) { // previously hidden due to noRoom, so show now
                            _showPane(pane);
                            if ($R)
                                $R.show();
                            s.isVisible = true;
                            s.noRoom = false;
                            if (isSidePane)
                                s.noVerticalRoom = false;
                            _fixIframe(pane);
                        } else if (!hasRoom && !s.noRoom) { // not currently hidden, so hide now
                            _hidePane(pane);
                            if ($R)
                                $R.hide();
                            s.isVisible = false;
                            s.noRoom = true;
                        }
                    }

                    // see if there is enough room to fit the border-pane
                    if (pane === "center") {
                        // ignore center in this block
                    } else if (s.minSize <= s.maxSize) { // pane CAN fit
                        hasRoom = true;
                        if (s.size > s.maxSize) // pane is too big - shrink it
                            sizePane(pane, s.maxSize, skipCallback, true, force); // true = noAnimation
                        else if (s.size < s.minSize) // pane is too small - enlarge it
                            sizePane(pane, s.minSize, skipCallback, true, force); // true = noAnimation
                        // need s.isVisible because new pseudoClose method keeps pane visible, but off-screen
                        else if ($R && s.isVisible && $P.is(":visible")) {
                            // make sure resizer-bar is positioned correctly
                            // handles situation where nested layout was 'hidden' when initialized
                            var pos = s.size + sC.inset[c.side];
                            if ($.layout.cssNum($R, c.side) != pos)
                                $R.css(c.side, pos);
                        }

                        // if was previously hidden due to noRoom, then RESET because NOW there is room
                        if (s.noRoom) {
                            // s.noRoom state will be set by open or show
                            if (s.wasOpen && o.closable) {
                                if (o.autoReopen)
                                    open(pane, false, true, true); // true = noAnimation, true = noAlert
                                else // leave the pane closed, so just update state
                                    s.noRoom = false;
                            } else
                                show(pane, s.wasOpen, true, true); // true = noAnimation, true = noAlert
                        }
                    } else { // !hasRoom - pane CANNOT fit
                        if (!s.noRoom) { // pane not set as noRoom yet, so hide or close it now...
                            s.noRoom = true; // update state
                            s.wasOpen = !s.isClosed && !s.isSliding;
                            if (s.isClosed) {
                            } // SKIP
                            else if (o.closable) // 'close' if possible
                                close(pane, true, true); // true = force, true = noAnimation
                            else // 'hide' pane if cannot just be closed
                                hide(pane, true); // true = noAnimation
                        }
                    }
                }


                /**
                 * manualSizePane is an exposed flow-through method allowing extra code when pane is 'manually resized'
                 *
                 * @param {(string|Object)} evt_or_pane    The pane being resized
                 * @param {number}   size     The *desired* new size for this pane - will be validated
                 * @param {boolean=}   [skipCallback=false] Should the onresize callback be run?
                 * @param {boolean=}   [noAnimation=false]
                 * @param {boolean=}   [force=false]   Force resizing even if does not seem necessary
                 */
                , manualSizePane = function (evt_or_pane, size, skipCallback, noAnimation, force) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , o = options[pane]
                        , s = state[pane]
                        // if resizing callbacks have been delayed and resizing is now DONE, force resizing to complete...
                        , forceResize = force || (o.livePaneResizing && !s.isResizing)
                    ;
                    if (pane === "center")
                        return; // validate
                    // ANY call to manualSizePane disables autoResize - ie, percentage sizing
                    s.autoResize = false;
                    // flow-through...
                    sizePane(pane, size, skipCallback, noAnimation, forceResize); // will animate resize if option enabled
                }

                /**
                 * sizePane is called only by internal methods whenever a pane needs to be resized
                 *
                 * @param {(string|Object)} evt_or_pane    The pane being resized
                 * @param {number}   size     The *desired* new size for this pane - will be validated
                 * @param {boolean=}   [skipCallback=false] Should the onresize callback be run?
                 * @param {boolean=}   [noAnimation=false]
                 * @param {boolean=}   [force=false]   Force resizing even if does not seem necessary
                 */
                , sizePane = function (evt_or_pane, size, skipCallback, noAnimation, force) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane) // probably NEVER called from event?
                        , o = options[pane]
                        , s = state[pane]
                        , $P = $Ps[pane]
                        , $R = $Rs[pane]
                        , side = _c[pane].side
                        , dimName = _c[pane].sizeType.toLowerCase()
                        , skipResizeWhileDragging = s.isResizing && !o.triggerEventsDuringLiveResize
                        , doFX = noAnimation !== true && o.animatePaneSizing
                        , oldSize, newSize
                    ;
                    if (pane === "center")
                        return; // validate
                    // QUEUE in case another action/animation is in progress
                    $N.queue(function (queueNext) {
                        // calculate 'current' min/max sizes
                        setSizeLimits(pane); // update pane-state
                        oldSize = s.size;
                        size = _parseSize(pane, size); // handle percentages & auto
                        size = max(size, _parseSize(pane, o.minSize));
                        size = min(size, s.maxSize);
                        if (size < s.minSize) { // not enough room for pane!
                            queueNext(); // call before makePaneFit() because it needs the queue free
                            makePaneFit(pane, false, skipCallback); // will hide or close pane
                            return;
                        }

                        // IF newSize is same as oldSize, then nothing to do - abort
                        if (!force && size === oldSize)
                            return queueNext();

                        s.newSize = size;

                        // onresize_start callback CANNOT cancel resizing because this would break the layout!
                        if (!skipCallback && state.initialized && s.isVisible)
                            _runCallbacks("onresize_start", pane);

                        // resize the pane, and make sure its visible
                        newSize = cssSize(pane, size);

                        if (doFX && $P.is(":visible")) { // ANIMATE
                            var fx = $.layout.effects.size[pane] || $.layout.effects.size.all
                                , easing = o.fxSettings_size.easing || fx.easing
                                , z = options.zIndexes
                                , props = {};
                            props[dimName] = newSize + 'px';
                            s.isMoving = true;
                            // overlay all elements during animation
                            $P.css({zIndex: z.pane_animate})
                                .show().animate(props, o.fxSpeed_size, easing, function () {
                                // reset zIndex after animation
                                $P.css({zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal)});
                                s.isMoving = false;
                                delete s.newSize;
                                sizePane_2(); // continue
                                queueNext();
                            });
                        } else { // no animation
                            $P.css(dimName, newSize); // resize pane
                            delete s.newSize;
                            // if pane is visible, then
                            if ($P.is(":visible"))
                                sizePane_2(); // continue
                            else {
                                // pane is NOT VISIBLE, so just update state data...
                                // when pane is *next opened*, it will have the new size
                                s.size = size;    // update state.size
                                //$.extend(s, elDims($P)); // update state dimensions - CANNOT do this when not visible!    }
                            }
                            queueNext();
                        }
                    });

                    // SUBROUTINE
                    function sizePane_2() {
                        /* Panes are sometimes not sized precisely in some browsers!?
                 * This code will resize the pane up to 3 times to nudge the pane to the correct size
                 */
                        var actual = dimName === 'width' ? $P.outerWidth() : $P.outerHeight()
                            , tries = [{
                                pane: pane
                                , count: 1
                                , target: size
                                , actual: actual
                                , correct: (size === actual)
                                , attempt: size
                                , cssSize: newSize
                            }]
                            , lastTry = tries[0]
                            , thisTry = {}
                            , msg = 'Inaccurate size after resizing the ' + pane + '-pane.'
                        ;
                        while (!lastTry.correct) {
                            thisTry = {pane: pane, count: lastTry.count + 1, target: size};

                            if (lastTry.actual > size)
                                thisTry.attempt = max(0, lastTry.attempt - (lastTry.actual - size));
                            else // lastTry.actual < size
                                thisTry.attempt = max(0, lastTry.attempt + (size - lastTry.actual));

                            thisTry.cssSize = cssSize(pane, thisTry.attempt);
                            $P.css(dimName, thisTry.cssSize);

                            thisTry.actual = dimName == 'width' ? $P.outerWidth() : $P.outerHeight();
                            thisTry.correct = (size === thisTry.actual);

                            // log attempts and alert the user of this *non-fatal error* (if showDebugMessages)
                            if (tries.length === 1) {
                                _log(msg, false, true);
                                _log(lastTry, false, true);
                            }
                            _log(thisTry, false, true);
                            // after 4 tries, is as close as its gonna get!
                            if (tries.length > 3)
                                break;

                            tries.push(thisTry);
                            lastTry = tries[tries.length - 1];
                        }
                        // END TESTING CODE

                        // update pane-state dimensions
                        s.size = size;
                        $.extend(s, elDims($P));

                        if (s.isVisible && $P.is(":visible")) {
                            // reposition the resizer-bar
                            if ($R)
                                $R.css(side, size + sC.inset[side]);
                            // resize the content-div
                            sizeContent(pane);
                        }

                        if (!skipCallback && !skipResizeWhileDragging && state.initialized && s.isVisible)
                            _runCallbacks("onresize_end", pane);

                        // resize all the adjacent panes, and adjust their toggler buttons
                        // when skipCallback passed, it means the controlling method will handle 'other panes'
                        if (!skipCallback) {
                            // also no callback if live-resize is in progress and NOT triggerEventsDuringLiveResize
                            if (!s.isSliding)
                                sizeMidPanes(_c[pane].dir == "horz" ? "" : "center", skipResizeWhileDragging, force);
                            sizeHandles();
                        }

                        // if opposite-pane was autoClosed, see if it can be autoOpened now
                        var altPane = _c.oppositeEdge[pane];
                        if (size < oldSize && state[altPane].noRoom) {
                            setSizeLimits(altPane);
                            makePaneFit(altPane, false, skipCallback);
                        }

                        // DEBUG - ALERT user/developer so they know there was a sizing problem
                        if (tries.length > 1)
                            _log(msg + '\nSee the Error Console for details.', true, true);
                    }
                }

                /**
                 * @see  initPanes(), sizePane(),  resizeAll(), open(), close(), hide()
                 * @param {(Array.<string>|string)} panes     The pane(s) being resized, comma-delmited string
                 * @param {boolean=}     [skipCallback=false] Should the onresize callback be run?
                 * @param {boolean=}     [force=false]
                 */
                , sizeMidPanes = function (panes, skipCallback, force) {
                    panes = (panes ? panes : "east,west,center").split(",");

                    $.each(panes, function (i, pane) {
                        if (!$Ps[pane])
                            return; // NO PANE - skip
                        var
                            o = options[pane]
                            , s = state[pane]
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , isCenter = (pane == "center")
                            , hasRoom = true
                            , CSS = {}
                            // if pane is not visible, show it invisibly NOW rather than for *each call* in this script
                            , visCSS = $.layout.showInvisibly($P)

                            , newCenter = calcNewCenterPaneDims()
                        ;

                        // update pane-state dimensions
                        $.extend(s, elDims($P));

                        if (pane === "center") {
                            if (!force && s.isVisible && newCenter.width === s.outerWidth && newCenter.height === s.outerHeight) {
                                $P.css(visCSS);
                                return true; // SKIP - pane already the correct size
                            }
                            // set state for makePaneFit() logic
                            $.extend(s, cssMinDims(pane), {
                                maxWidth: newCenter.width
                                , maxHeight: newCenter.height
                            });
                            CSS = newCenter;
                            s.newWidth = CSS.width;
                            s.newHeight = CSS.height;
                            // convert OUTER width/height to CSS width/height
                            CSS.width = cssW($P, CSS.width);
                            // NEW - allow pane to extend 'below' visible area rather than hide it
                            CSS.height = cssH($P, CSS.height);
                            hasRoom = CSS.width >= 0 && CSS.height >= 0; // height >= 0 = ALWAYS TRUE NOW

                            // during layout init, try to shrink east/west panes to make room for center
                            if (!state.initialized && o.minWidth > newCenter.width) {
                                var
                                    reqPx = o.minWidth - s.outerWidth
                                    , minE = options.east.minSize || 0
                                    , minW = options.west.minSize || 0
                                    , sizeE = state.east.size
                                    , sizeW = state.west.size
                                    , newE = sizeE
                                    , newW = sizeW
                                ;
                                if (reqPx > 0 && state.east.isVisible && sizeE > minE) {
                                    newE = max(sizeE - minE, sizeE - reqPx);
                                    reqPx -= sizeE - newE;
                                }
                                if (reqPx > 0 && state.west.isVisible && sizeW > minW) {
                                    newW = max(sizeW - minW, sizeW - reqPx);
                                    reqPx -= sizeW - newW;
                                }
                                // IF we found enough extra space, then resize the border panes as calculated
                                if (reqPx === 0) {
                                    if (sizeE && sizeE != minE)
                                        sizePane('east', newE, true, true, force); // true = skipCallback/noAnimation - initPanes will handle when done
                                    if (sizeW && sizeW != minW)
                                        sizePane('west', newW, true, true, force); // true = skipCallback/noAnimation
                                    // now start over!
                                    sizeMidPanes('center', skipCallback, force);
                                    $P.css(visCSS);
                                    return; // abort this loop
                                }
                            }
                        } else { // for east and west, set only the height, which is same as center height
                            // set state.min/maxWidth/Height for makePaneFit() logic
                            if (s.isVisible && !s.noVerticalRoom)
                                $.extend(s, elDims($P), cssMinDims(pane));
                            if (!force && !s.noVerticalRoom && newCenter.height === s.outerHeight) {
                                $P.css(visCSS);
                                return true; // SKIP - pane already the correct size
                            }
                            // east/west have same top, bottom & height as center
                            CSS.top = newCenter.top;
                            CSS.bottom = newCenter.bottom;
                            s.newSize = newCenter.height;
                            // NEW - allow pane to extend 'below' visible area rather than hide it
                            CSS.height = cssH($P, newCenter.height);
                            s.maxHeight = CSS.height;
                            hasRoom = (s.maxHeight >= 0); // ALWAYS TRUE NOW
                            if (!hasRoom)
                                s.noVerticalRoom = true; // makePaneFit() logic
                        }

                        if (hasRoom) {
                            // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
                            if (!skipCallback && state.initialized)
                                _runCallbacks("onresize_start", pane);

                            $P.css(CSS); // apply the CSS to pane
                            if (pane !== "center")
                                sizeHandles(pane); // also update resizer length
                            if (s.noRoom && !s.isClosed && !s.isHidden)
                                makePaneFit(pane); // will re-open/show auto-closed/hidden pane
                            if (s.isVisible) {
                                $.extend(s, elDims($P)); // update pane dimensions
                                if (state.initialized)
                                    sizeContent(pane); // also resize the contents, if exists
                            }
                        } else if (!s.noRoom && s.isVisible) // no room for pane
                            makePaneFit(pane); // will hide or close pane

                        // reset visibility, if necessary
                        $P.css(visCSS);

                        delete s.newSize;
                        delete s.newWidth;
                        delete s.newHeight;

                        if (!s.isVisible)
                            return true; // DONE - next pane

                        /*
                 * Extra CSS for IE6 or IE7 in Quirks-mode - add 'width' to NORTH/SOUTH panes
                 * Normally these panes have only 'left' & 'right' positions so pane auto-sizes
                 * ALSO required when pane is an IFRAME because will NOT default to 'full width'
                 * TODO: Can I use width:100% for a north/south iframe?
                 * TODO: Sounds like a job for $P.outerWidth( sC.innerWidth ) SETTER METHOD
                 */
                        if (pane === "center") { // finished processing midPanes
                            var fix = browser.isIE6 || !browser.boxModel;
                            if ($Ps.north && (fix || state.north.tagName == "IFRAME"))
                                $Ps.north.css("width", cssW($Ps.north, sC.innerWidth));
                            if ($Ps.south && (fix || state.south.tagName == "IFRAME"))
                                $Ps.south.css("width", cssW($Ps.south, sC.innerWidth));
                        }

                        // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
                        if (!skipCallback && state.initialized)
                            _runCallbacks("onresize_end", pane);
                    });
                }


                /**
                 * @see  window.onresize(), callbacks or custom code
                 * @param {(Object|boolean)=} evt_or_refresh If 'true', then also reset pane-positioning
                 */
                , resizeAll = function (evt_or_refresh) {
                    var oldW = sC.innerWidth
                        , oldH = sC.innerHeight
                    ;
                    // stopPropagation if called by trigger("layoutdestroy") - use evtPane utility
                    evtPane(evt_or_refresh);

                    // cannot size layout when 'container' is hidden or collapsed
                    if (!$N.is(":visible"))
                        return;

                    if (!state.initialized) {
                        _initLayoutElements();
                        return; // no need to resize since we just initialized!
                    }

                    if (evt_or_refresh === true && $.isPlainObject(options.outset)) {
                        // update container CSS in case outset option has changed
                        $N.css(options.outset);
                    }
                    // UPDATE container dimensions
                    $.extend(sC, elDims($N, options.inset));
                    if (!sC.outerHeight)
                        return;

                    // if 'true' passed, refresh pane & handle positioning too
                    if (evt_or_refresh === true) {
                        setPanePosition();
                    }

                    // onresizeall_start will CANCEL resizing if returns false
                    // state.container has already been set, so user can access this info for calcuations
                    if (false === _runCallbacks("onresizeall_start"))
                        return false;

                    var // see if container is now 'smaller' than before
                        shrunkH = (sC.innerHeight < oldH)
                        , shrunkW = (sC.innerWidth < oldW)
                        , $P, o, s
                    ;

                    var shrunk = shrunkH || shrunkW;

                    // NOTE special order for sizing: S-N-E-W
                    $.each(["south", "north", "east", "west"], function (i, pane) {
                        if (!$Ps[pane])
                            return; // no pane - SKIP
                        o = options[pane];
                        s = state[pane];

                        var paneResponsive = false;
                        var paneRespondedState = false;
                        var windowWidth = $(window).width();

                        if ((o !== null && o !== 'undefined') && o.responsive && o.responsive.enabled) {
                            //if(s.size >= o.responsive.sizes.lg)
                            if (windowWidth >= o.responsive.sizes.lg)
                                if (o.responsive.when === 'lg' || o.responsive.when === 'md' || o.responsive.when === 'sm' || o.responsive.when === 'xs') {
                                    paneResponsive = false;
                                } else {
                                    paneResponsive = true;
                                }

                            //if(s.size >= o.responsive.sizes.md)
                            if (windowWidth >= o.responsive.sizes.md && windowWidth < o.responsive.sizes.lg)
                                if (o.responsive.when === 'md' || o.responsive.when === 'sm' || o.responsive.when === 'xs') {
                                    paneResponsive = false;
                                } else {
                                    paneResponsive = true; //hide
                                }

                            if (windowWidth >= o.responsive.sizes.sm && windowWidth < o.responsive.sizes.md)
                            //if(s.size >= o.responsive.sizes.sm)
                                if (o.responsive.when === 'sm' || o.responsive.when === 'xs') {
                                    paneResponsive = false;
                                } else {
                                    paneResponsive = true; //hide
                                }

                            //if(s.size >= o.responsive.sizes.xs)
                            if (windowWidth >= o.responsive.sizes.xs && windowWidth < o.responsive.sizes.sm)
                                if (o.responsive.when === 'xs') {
                                    paneResponsive = false;
                                } else {
                                    paneResponsive = true; //hide
                                }
                        }
                        if (s.autoResize && s.size !== o.size) // resize pane to original size set in options
                        {
                            if (paneResponsive && s.isVisible) {
                                if (o.closable) {
                                    close(pane, true, !o.responsiveAnimate); // true = force, true = noAnimation
                                } else {
                                    hide(pane, !o.responsiveAnimate); // true = noAnimation
                                }
                                s.responded = true;
                            } else {
                                if (s.responded) {
                                    if (o.closable) {
                                        open(pane, false, !o.responsiveAnimate); // true = force, true = noAnimation
                                    } else {
                                        show(pane, true, !o.responsiveAnimate); // true = open/NoAnimation/NoAlert
                                    }
                                    s.responded = false;
                                }
                            }
                            sizePane(pane, o.size, true, true, true); // true=skipCallback/noAnimation/forceResize
                        } else {
                            setSizeLimits(pane);
                            if (paneResponsive) {
                                if (o.closable) {
                                    close(pane, true, !o.responsiveAnimate); // true = force, true = noAnimation
                                } else {
                                    hide(pane, !o.responsiveAnimate); // true = noAnimation
                                }
                                s.responded = true;
                            } else {
                                if (s.responded) {
                                    if (o.closable) {
                                        open(pane, false, !o.responsiveAnimate); // true = force, true = noAnimation
                                    } else {
                                        show(pane, true, !o.responsiveAnimate); // true = open/NoAnimation/NoAlert
                                    }
                                    s.responded = false;
                                }
                            }
                            makePaneFit(pane, false, true, true); // true=skipCallback/forceResize
                        }
                    });

                    sizeMidPanes("", true, true); // true=skipCallback/forceResize
                    sizeHandles(); // reposition the toggler elements

                    // trigger all individual pane callbacks AFTER layout has finished resizing
                    $.each(_c.allPanes, function (i, pane) {
                        $P = $Ps[pane];
                        if (!$P)
                            return; // SKIP
                        if (state[pane].isVisible) // undefined for non-existent panes
                            _runCallbacks("onresize_end", pane); // callback - if exists
                    });


                    _runCallbacks("onresizeall_end");
                    //_triggerLayoutEvent(pane, 'resizeall');
                }

                /**
                 * Whenever a pane resizes or opens that has a nested layout, trigger resizeAll
                 *
                 * @param {(string|Object)} evt_or_pane  The pane just resized or opened
                 */
                , resizeChildren = function (evt_or_pane, skipRefresh) {
                    var pane = evtPane.call(this, evt_or_pane);

                    if (!options[pane].resizeChildren)
                        return;

                    // ensure the pane-children are up-to-date
                    if (!skipRefresh)
                        refreshChildren(pane);
                    var pC = children[pane];
                    if ($.isPlainObject(pC)) {
                        // resize one or more children
                        $.each(pC, function (key, child) {
                            if (!child.destroyed)
                                child.resizeAll();
                        });
                    }
                }

                /**
                 * IF pane has a content-div, then resize all elements inside pane to fit pane-height
                 *
                 * @param {(string|Object)} evt_or_panes  The pane(s) being resized
                 * @param {boolean=}   [remeasure=false] Should the content (header/footer) be remeasured?
                 */
                , sizeContent = function (evt_or_panes, remeasure) {
                    if (!isInitialized())
                        return;

                    var panes = evtPane.call(this, evt_or_panes);
                    panes = panes ? panes.split(",") : _c.allPanes;

                    $.each(panes, function (idx, pane) {
                        var
                            $P = $Ps[pane]
                            , $C = $Cs[pane]
                            , o = options[pane]
                            , s = state[pane]
                            , m = s.content // m = measurements
                        ;
                        if (!$P || !$C || !$P.is(":visible"))
                            return true; // NOT VISIBLE - skip

                        // if content-element was REMOVED, update OR remove the pointer
                        if (!$C.length) {
                            initContent(pane, false); // false = do NOT sizeContent() - already there!
                            if (!$C)
                                return;   // no replacement element found - pointer have been removed
                        }

                        // onsizecontent_start will CANCEL resizing if returns false
                        if (false === _runCallbacks("onsizecontent_start", pane))
                            return;

                        // skip re-measuring offsets if live-resizing
                        if ((!s.isMoving && !s.isResizing) || o.liveContentResizing || remeasure || m.top == undefined) {
                            _measure();
                            // if any footers are below pane-bottom, they may not measure correctly,
                            // so allow pane overflow and re-measure
                            if (m.hiddenFooters > 0 && $P.css("overflow") === "hidden") {
                                $P.css("overflow", "visible");
                                _measure(); // remeasure while overflowing
                                $P.css("overflow", "hidden");
                            }
                        }
                        // NOTE: spaceAbove/Below *includes* the pane paddingTop/Bottom, but not pane.borders
                        var newH = s.innerHeight - (m.spaceAbove - s.css.paddingTop) - (m.spaceBelow - s.css.paddingBottom);

                        if (!$C.is(":visible") || m.height != newH) {
                            // size the Content element to fit new pane-size - will autoHide if not enough room
                            setOuterHeight($C, newH, true); // true=autoHide
                            m.height = newH; // save new height
                        }
                        if (state.initialized)
                            _runCallbacks("onsizecontent_end", pane);

                        function _below($E) {
                            return max(s.css.paddingBottom, (parseInt($E.css("marginBottom"), 10) || 0));
                        }

                        function _measure() {
                            var
                                ignore = options[pane].contentIgnoreSelector
                                , $Fs = $C.nextAll().not(".ui-layout-mask").not(ignore || ":lt(0)") // not :lt(0) = ALL
                                , $Fs_vis = $Fs.filter(':visible')
                                , $F = $Fs_vis.filter(':last')
                            ;
                            m = {
                                top: $C[0].offsetTop
                                , height: $C.outerHeight()
                                , numFooters: $Fs.length
                                , hiddenFooters: $Fs.length - $Fs_vis.length
                                , spaceBelow: 0 // correct if no content footer ($E)
                            };
                            m.spaceAbove = m.top; // just for state - not used in calc
                            m.bottom = m.top + m.height;
                            if ($F.length)
                            //spaceBelow = (LastFooter.top + LastFooter.height) [footerBottom] - Content.bottom + max(LastFooter.marginBottom, pane.paddingBotom)
                                m.spaceBelow = ($F[0].offsetTop + $F.outerHeight()) - m.bottom + _below($F);
                            else // no footer - check marginBottom on Content element itself
                                m.spaceBelow = _below($C);
                        }
                    });
                }


                /**
                 * Called every time a pane is opened, closed, or resized to slide the togglers to 'center' and adjust their length if necessary
                 *
                 * @see  initHandles(), open(), close(), resizeAll()
                 * @param {(string|Object)=}  evt_or_panes The pane(s) being resized
                 */
                , sizeHandles = function (evt_or_panes) {
                    var panes = evtPane.call(this, evt_or_panes);
                    panes = panes ? panes.split(",") : _c.borderPanes;

                    $.each(panes, function (i, pane) {
                        var
                            o = options[pane]
                            , s = state[pane]
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , $T = $Ts[pane]
                            , $TC
                        ;
                        if (!$P || !$R)
                            return;

                        var
                            dir = _c[pane].dir
                            , _state = (s.isClosed ? "_closed" : "_open")
                            , spacing = o["spacing" + _state]
                            , togAlign = o["togglerAlign" + _state]
                            , togLen = o["togglerLength" + _state]
                            , paneLen
                            , left
                            , offset
                            , CSS = {}
                        ;

                        if (spacing === 0) {
                            $R.hide();
                            return;
                        } else if (!s.noRoom && !s.isHidden) // skip if resizer was hidden for any reason
                            $R.show(); // in case was previously hidden

                        // Resizer Bar is ALWAYS same width/height of pane it is attached to
                        if (dir === "horz") { // north/south
                            //paneLen = $P.outerWidth(); // s.outerWidth ||
                            paneLen = sC.innerWidth; // handle offscreen-panes
                            s.resizerLength = paneLen;
                            left = $.layout.cssNum($P, "left");
                            $R.css({
                                width: cssW($R, paneLen) // account for borders & padding
                                , height: cssH($R, spacing) // ditto
                                , left: left > -9999 ? left : sC.inset.left // handle offscreen-panes
                            });
                        } else { // east/west
                            paneLen = $P.outerHeight(); // s.outerHeight ||
                            s.resizerLength = paneLen;
                            $R.css({
                                height: cssH($R, paneLen) // account for borders & padding
                                , width: cssW($R, spacing) // ditto
                                , top: sC.inset.top + getPaneSize("north", true) // TODO: what if no North pane?
                                //, top: $.layout.cssNum($Ps["center"], "top")
                            });
                        }

                        // remove hover classes
                        removeHover(o, $R);

                        if ($T) {
                            if (togLen === 0 || (s.isSliding && o.hideTogglerOnSlide)) {
                                $T.hide(); // always HIDE the toggler when 'sliding'
                                return;
                            } else
                                $T.show(); // in case was previously hidden

                            if (!(togLen > 0) || togLen === "100%" || togLen > paneLen) {
                                togLen = paneLen;
                                offset = 0;
                            } else { // calculate 'offset' based on options.PANE.togglerAlign_open/closed
                                if (isStr(togAlign)) {
                                    switch (togAlign) {
                                        case "top":
                                        case "left":
                                            offset = 0;
                                            break;
                                        case "bottom":
                                        case "right":
                                            offset = paneLen - togLen;
                                            break;
                                        case "middle":
                                        case "center":
                                        default:
                                            offset = round((paneLen - togLen) / 2); // 'default' catches typos
                                    }
                                } else { // togAlign = number
                                    var x = parseInt(togAlign, 10); //
                                    if (togAlign >= 0)
                                        offset = x;
                                    else
                                        offset = paneLen - togLen + x; // NOTE: x is negative!
                                }
                            }

                            if (dir === "horz") { // north/south
                                var width = cssW($T, togLen);
                                $T.css({
                                    width: width  // account for borders & padding
                                    , height: cssH($T, spacing) // ditto
                                    , left: offset // TODO: VERIFY that toggler  positions correctly for ALL values
                                    , top: 0
                                });
                                // CENTER the toggler content SPAN
                                $T.children(".content").each(function () {
                                    $TC = $(this);
                                    $TC.css("marginLeft", round((width - $TC.outerWidth()) / 2)); // could be negative
                                });
                            } else { // east/west
                                var height = cssH($T, togLen);
                                $T.css({
                                    height: height // account for borders & padding
                                    , width: cssW($T, spacing) // ditto
                                    , top: offset // POSITION the toggler
                                    , left: 0
                                });
                                // CENTER the toggler content SPAN
                                $T.children(".content").each(function () {
                                    $TC = $(this);
                                    $TC.css("marginTop", round((height - $TC.outerHeight()) / 2)); // could be negative
                                });
                            }

                            // remove ALL hover classes
                            removeHover(0, $T);
                        }

                        // DONE measuring and sizing this resizer/toggler, so can be 'hidden' now
                        if (!state.initialized && (o.initHidden || s.isHidden)) {
                            $R.hide();
                            if ($T)
                                $T.hide();
                        }
                    });
                }


                /**
                 * @param {(string|Object)} evt_or_pane
                 */
                , enableClosable = function (evt_or_pane) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , $T = $Ts[pane]
                        , o = options[pane]
                    ;
                    if (!$T)
                        return;
                    o.closable = true;
                    $T.on("click." + sID, function (evt) {
                        evt.stopPropagation();
                        toggle(pane);
                    })
                        .css("visibility", "visible")
                        .css("cursor", "pointer")
                        .attr("title", state[pane].isClosed ? o.tips.Open : o.tips.Close) // may be blank
                        .show();
                }
                /**
                 * @param {(string|Object)} evt_or_pane
                 * @param {boolean=}   [hide=false]
                 */
                , disableClosable = function (evt_or_pane, hide) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , $T = $Ts[pane]
                    ;
                    if (!$T)
                        return;
                    options[pane].closable = false;
                    // is closable is disable, then pane MUST be open!
                    if (state[pane].isClosed)
                        open(pane, false, true);
                    $T.off("." + sID)
                        .css("visibility", hide ? "hidden" : "visible") // instead of hide(), which creates logic issues
                        .css("cursor", "default")
                        .attr("title", "");
                }


                /**
                 * @param {(string|Object)} evt_or_pane
                 */
                , enableSlidable = function (evt_or_pane) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , $R = $Rs[pane]
                    ;
                    if (!$R || !$R.data('draggable'))
                        return;
                    options[pane].slidable = true;
                    if (state[pane].isClosed)
                        bindStartSlidingEvents(pane, true);
                }
                /**
                 * @param {(string|Object)} evt_or_pane
                 */
                , disableSlidable = function (evt_or_pane) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , $R = $Rs[pane]
                    ;
                    if (!$R)
                        return;
                    options[pane].slidable = false;
                    if (state[pane].isSliding)
                        close(pane, false, true);
                    else {
                        bindStartSlidingEvents(pane, false);
                        $R.css("cursor", "default")
                            .attr("title", "");
                        removeHover(null, $R[0]); // in case currently hovered
                    }
                }


                /**
                 * @param {(string|Object)} evt_or_pane
                 */
                , enableResizable = function (evt_or_pane) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , $R = $Rs[pane]
                        , o = options[pane]
                    ;
                    if (!$R || !$R.data('draggable'))
                        return;
                    o.resizable = true;
                    $R.draggable("enable");
                    if (!state[pane].isClosed)
                        $R.css("cursor", o.resizerCursor)
                            .attr("title", o.tips.Resize);
                }
                /**
                 * @param {(string|Object)} evt_or_pane
                 */
                , disableResizable = function (evt_or_pane) {
                    if (!isInitialized())
                        return;
                    var pane = evtPane.call(this, evt_or_pane)
                        , $R = $Rs[pane]
                    ;
                    if (!$R || !$R.data('draggable'))
                        return;
                    options[pane].resizable = false;
                    $R.draggable("disable")
                        .css("cursor", "default")
                        .attr("title", "");
                    removeHover(null, $R[0]); // in case currently hovered
                }


                /**
                 * Move a pane from source-side (eg, west) to target-side (eg, east)
                 * If pane exists on target-side, move that to source-side, ie, 'swap' the panes
                 *
                 * @param {(string|Object)} evt_or_pane1 The pane/edge being swapped
                 * @param {string}   pane2   ditto
                 */
                , swapPanes = function (evt_or_pane1, pane2) {
                    if (!isInitialized())
                        return;
                    var pane1 = evtPane.call(this, evt_or_pane1);
                    // change state.edge NOW so callbacks can know where pane is headed...
                    state[pane1].edge = pane2;
                    state[pane2].edge = pane1;
                    // run these even if NOT state.initialized
                    if (false === _runCallbacks("onswap_start", pane1)
                        || false === _runCallbacks("onswap_start", pane2)
                    ) {
                        state[pane1].edge = pane1; // reset
                        state[pane2].edge = pane2;
                        return;
                    }

                    var
                        oPane1 = copy(pane1)
                        , oPane2 = copy(pane2)
                        , sizes = {}
                    ;
                    sizes[pane1] = oPane1 ? oPane1.state.size : 0;
                    sizes[pane2] = oPane2 ? oPane2.state.size : 0;

                    // clear pointers & state
                    $Ps[pane1] = false;
                    $Ps[pane2] = false;
                    state[pane1] = {};
                    state[pane2] = {};

                    // ALWAYS remove the resizer & toggler elements
                    if ($Ts[pane1])
                        $Ts[pane1].remove();
                    if ($Ts[pane2])
                        $Ts[pane2].remove();
                    if ($Rs[pane1])
                        $Rs[pane1].remove();
                    if ($Rs[pane2])
                        $Rs[pane2].remove();
                    $Rs[pane1] = $Rs[pane2] = $Ts[pane1] = $Ts[pane2] = false;

                    // transfer element pointers and data to NEW Layout keys
                    move(oPane1, pane2);
                    move(oPane2, pane1);

                    // cleanup objects
                    oPane1 = oPane2 = sizes = null;

                    // make panes 'visible' again
                    if ($Ps[pane1])
                        $Ps[pane1].css(_c.visible);
                    if ($Ps[pane2])
                        $Ps[pane2].css(_c.visible);

                    // fix any size discrepancies caused by swap
                    resizeAll();

                    // run these even if NOT state.initialized
                    _runCallbacks("onswap_end", pane1);
                    _runCallbacks("onswap_end", pane2);


                    function copy(n) { // n = pane
                        var
                            $P = $Ps[n]
                            , $C = $Cs[n]
                        ;
                        return !$P ? false : {
                            pane: n
                            , P: $P ? $P[0] : false
                            , C: $C ? $C[0] : false
                            , state: $.extend(true, {}, state[n])
                            , options: $.extend(true, {}, options[n])
                        }
                    }

                    function move(oPane, pane) {
                        if (!oPane)
                            return;
                        var
                            P = oPane.P
                            , C = oPane.C
                            , oldPane = oPane.pane
                            , c = _c[pane]
                            // save pane-options that should be retained
                            , s = $.extend(true, {}, state[pane])
                            , o = options[pane]
                            // RETAIN side-specific FX Settings - more below
                            , fx = {resizerCursor: o.resizerCursor}
                            , re, size, pos
                        ;
                        $.each("fxName,fxSpeed,fxSettings".split(","), function (i, k) {
                            fx[k + "_open"] = o[k + "_open"];
                            fx[k + "_close"] = o[k + "_close"];
                            fx[k + "_size"] = o[k + "_size"];
                        });

                        // update object pointers and attributes
                        $Ps[pane] = $(P)
                            .data({
                                layoutPane: Instance[pane] // NEW pointer to pane-alias-object
                                , layoutEdge: pane
                            })
                            .css(_c.hidden)
                            .css(c.cssReq)
                        ;
                        $Cs[pane] = C ? $(C) : false;

                        // set options and state
                        options[pane] = $.extend(true, {}, oPane.options, fx);
                        state[pane] = $.extend(true, {}, oPane.state);

                        // change classNames on the pane, eg: ui-layout-pane-east ==> ui-layout-pane-west
                        re = new RegExp(o.paneClass + "-" + oldPane, "g");
                        P.className = P.className.replace(re, o.paneClass + "-" + pane);

                        // ALWAYS regenerate the resizer & toggler elements
                        initHandles(pane); // create the required resizer & toggler

                        // if moving to different orientation, then keep 'target' pane size
                        if (c.dir != _c[oldPane].dir) {
                            size = sizes[pane] || 0;
                            setSizeLimits(pane); // update pane-state
                            size = max(size, state[pane].minSize);
                            // use manualSizePane to disable autoResize - not useful after panes are swapped
                            manualSizePane(pane, size, true, true); // true/true = skipCallback/noAnimation
                        } else // move the resizer here
                            $Rs[pane].css(c.side, sC.inset[c.side] + (state[pane].isVisible ? getPaneSize(pane) : 0));


                        // ADD CLASSNAMES & SLIDE-BINDINGS
                        if (oPane.state.isVisible && !s.isVisible)
                            setAsOpen(pane, true); // true = skipCallback
                        else {
                            setAsClosed(pane);
                            bindStartSlidingEvents(pane, true); // will enable events IF option is set
                        }

                        // DESTROY the object
                        oPane = null;
                    }
                }


                /**
                 * INTERNAL method to sync pin-buttons when pane is opened or closed
                 * Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
                 *
                 * @see  open(), setAsOpen(), setAsClosed()
                 * @param {string} pane   These are the params returned to callbacks by layout()
                 * @param {boolean} doPin  True means set the pin 'down', False means 'up'
                 */
                , syncPinBtns = function (pane, doPin) {
                    if ($.layout.plugins.buttons)
                        $.each(state[pane].pins, function (i, selector) {
                            $.layout.buttons.setPinState(Instance, $(selector), pane, doPin);
                        });
                }

            ; // END var DECLARATIONS

            /**
             * Capture keys when enableCursorHotkey - toggle pane if hotkey pressed
             *
             * @see  document.keydown()
             */
            function keyDown(evt) {
                if (!evt)
                    return true;
                var code = evt.keyCode;
                if (code < 33)
                    return true; // ignore special keys: ENTER, TAB, etc

                var
                    PANE = {
                        38: "north" // Up Cursor - $.ui.keyCode.UP
                        , 40: "south" // Down Cursor - $.ui.keyCode.DOWN
                        , 37: "west"  // Left Cursor - $.ui.keyCode.LEFT
                        , 39: "east"  // Right Cursor - $.ui.keyCode.RIGHT
                    }
                    , ALT = evt.altKey // no worky!
                    , SHIFT = evt.shiftKey
                    , CTRL = evt.ctrlKey
                    , CURSOR = (CTRL && code >= 37 && code <= 40)
                    , o, k, m, pane
                ;

                if (CURSOR && options[PANE[code]].enableCursorHotkey) // valid cursor-hotkey
                    pane = PANE[code];
                else if (CTRL || SHIFT) // check to see if this matches a custom-hotkey
                    $.each(_c.borderPanes, function (i, p) { // loop each pane to check its hotkey
                        o = options[p];
                        k = o.customHotkey;
                        m = o.customHotkeyModifier; // if missing or invalid, treated as "CTRL+SHIFT"
                        if ((SHIFT && m == "SHIFT") || (CTRL && m == "CTRL") || (CTRL && SHIFT)) { // Modifier matches
                            if (k && code === (isNaN(k) || k <= 9 ? k.toUpperCase().charCodeAt(0) : k)) { // Key matches
                                pane = p;
                                return false; // BREAK
                            }
                        }
                    });

                // validate pane
                if (!pane || !$Ps[pane] || !options[pane].closable || state[pane].isHidden)
                    return true;

                toggle(pane);

                evt.stopPropagation();
                evt.returnValue = false; // CANCEL key
                return false;
            }

            /*
         * ######################################
         * UTILITY METHODS
         * called externally or by initButtons
         * ######################################
         */

            /**
             * Change/reset a pane overflow setting & zIndex to allow popups/drop-downs to work
             *
             * @param {Object=}   [el] (optional) Can also be 'bound' to a click, mouseOver, or other event
             */
            function allowOverflow(el) {
                if (!isInitialized())
                    return;
                if (this && this.tagName)
                    el = this; // BOUND to element
                var $P;
                if (isStr(el))
                    $P = $Ps[el];
                else if ($(el).data("layoutRole"))
                    $P = $(el);
                else
                    $(el).parents().each(function () {
                        if ($(this).data("layoutRole")) {
                            $P = $(this);
                            return false; // BREAK
                        }
                    });
                if (!$P || !$P.length)
                    return; // INVALID

                var
                    pane = $P.data("layoutEdge")
                    , s = state[pane]
                ;

                // if pane is already raised, then reset it before doing it again!
                // this would happen if allowOverflow is attached to BOTH the pane and an element
                if (s.cssSaved)
                    resetOverflow(pane); // reset previous CSS before continuing

                // if pane is raised by sliding or resizing, or its closed, then abort
                if (s.isSliding || s.isResizing || s.isClosed) {
                    s.cssSaved = false;
                    return;
                }

                var
                    newCSS = {zIndex: (options.zIndexes.resizer_normal + 1)}
                    , curCSS = {}
                    , of = $P.css("overflow")
                    , ofX = $P.css("overflowX")
                    , ofY = $P.css("overflowY")
                ;
                // determine which, if any, overflow settings need to be changed
                if (of != "visible") {
                    curCSS.overflow = of;
                    newCSS.overflow = "visible";
                }
                if (ofX && !ofX.match(/(visible|auto)/)) {
                    curCSS.overflowX = ofX;
                    newCSS.overflowX = "visible";
                }
                if (ofY && !ofY.match(/(visible|auto)/)) {
                    curCSS.overflowY = ofX;
                    newCSS.overflowY = "visible";
                }

                // save the current overflow settings - even if blank!
                s.cssSaved = curCSS;

                // apply new CSS to raise zIndex and, if necessary, make overflow 'visible'
                $P.css(newCSS);

                // make sure the zIndex of all other panes is normal
                $.each(_c.allPanes, function (i, p) {
                    if (p != pane)
                        resetOverflow(p);
                });

            }

            /**
             * @param {Object=}   [el] (optional) Can also be 'bound' to a click, mouseOver, or other event
             */
            function resetOverflow(el) {
                if (!isInitialized())
                    return;
                if (this && this.tagName)
                    el = this; // BOUND to element
                var $P;
                if (isStr(el))
                    $P = $Ps[el];
                else if ($(el).data("layoutRole"))
                    $P = $(el);
                else
                    $(el).parents().each(function () {
                        if ($(this).data("layoutRole")) {
                            $P = $(this);
                            return false; // BREAK
                        }
                    });
                if (!$P || !$P.length)
                    return; // INVALID

                var
                    pane = $P.data("layoutEdge")
                    , s = state[pane]
                    , CSS = s.cssSaved || {}
                ;
                // reset the zIndex
                if (!s.isSliding && !s.isResizing)
                    $P.css("zIndex", options.zIndexes.pane_normal);

                // reset Overflow - if necessary
                $P.css(CSS);

                // clear var
                s.cssSaved = false;
            }

            /*
         * #####################
         * CREATE/RETURN LAYOUT
         * #####################
         */

            // validate that container exists
            var $N = $(this).eq(0); // FIRST matching Container element
            if (!$N.length) {
                return _log(options.errors.containerMissing);
            }
            // Users retrieve Instance of a layout with: $N.layout() OR $N.data("layout")
            // return the Instance-pointer if layout has already been initialized
            if ($N.data("layoutContainer") && $N.data("layout"))
                return $N.data("layout"); // cached pointer

            // init global vars
            var
                $Ps = {} // Panes x5  - set in initPanes()
                , $Cs = {} // Content x5 - set in initPanes()
                , $Rs = {} // Resizers x4 - set in initHandles()
                , $Ts = {} // Togglers x4 - set in initHandles()
                , $Ms = $([]) // Masks - up to 2 masks per pane (IFRAME + DIV)
                // aliases for code brevity
                , sC = state.container // alias for easy access to 'container dimensions'
                , sID = state.id // alias for unique layout ID/namespace - eg: "layout435"
            ;

            // create Instance object to expose data & option Properties, and primary action Methods
            var Instance = {
                // layout data
                options: options   // property - options hash
                , state: state   // property - dimensions hash
                // object pointers
                , container: $N    // property - object pointers for layout container
                , panes: $Ps    // property - object pointers for ALL Panes: panes.north, panes.center
                , contents: $Cs    // property - object pointers for ALL Content: contents.north, contents.center
                , resizers: $Rs    // property - object pointers for ALL Resizers, eg: resizers.north
                , togglers: $Ts    // property - object pointers for ALL Togglers, eg: togglers.north
                // border-pane open/close
                , hide: hide   // method - ditto
                , show: show   // method - ditto
                , toggle: toggle   // method - pass a 'pane' ("north", "west", etc)
                , open: open   // method - ditto
                , close: close   // method - ditto
                , slideOpen: slideOpen  // method - ditto
                , slideClose: slideClose  // method - ditto
                , slideToggle: slideToggle  // method - ditto
                // pane actions
                , setSizeLimits: setSizeLimits // method - pass a 'pane' - update state min/max data
                , _sizePane: sizePane  // method -intended for user by plugins only!
                , sizePane: manualSizePane // method - pass a 'pane' AND an 'outer-size' in pixels or percent, or 'auto'
                , sizeContent: sizeContent  // method - pass a 'pane'
                , swapPanes: swapPanes  // method - pass TWO 'panes' - will swap them
                , showMasks: showMasks  // method - pass a 'pane' OR list of panes - default = all panes with mask option set
                , hideMasks: hideMasks  // method - ditto'
                // pane element methods
                , initContent: initContent  // method - ditto
                , addPane: addPane   // method - pass a 'pane'
                , removePane: removePane  // method - pass a 'pane' to remove from layout, add 'true' to delete the pane-elem
                , createChildren: createChildren // method - pass a 'pane' and (optional) layout-options (OVERRIDES options[pane].children
                , refreshChildren: refreshChildren // method - pass a 'pane' and a layout-instance
                // special pane option setting
                , enableClosable: enableClosable // method - pass a 'pane'
                , disableClosable: disableClosable // method - ditto
                , enableSlidable: enableSlidable // method - ditto
                , disableSlidable: disableSlidable // method - ditto
                , enableResizable: enableResizable // method - ditto
                , disableResizable: disableResizable// method - ditto
                // utility methods for panes
                , allowOverflow: allowOverflow // utility - pass calling element (this)
                , resetOverflow: resetOverflow // utility - ditto
                // layout control
                , destroy: destroy   // method - no parameters
                , initPanes: isInitialized // method - no parameters
                , resizeAll: resizeAll  // method - no parameters
                // callback triggering
                , runCallbacks: _runCallbacks // method - pass evtName & pane (if a pane-event), eg: trigger("onopen", "west")
                // alias collections of options, state and children - created in addPane and extended elsewhere
                , hasParentLayout: false   // set by initContainer()
                , children: children  // pointers to child-layouts, eg: Instance.children.west.layoutName
                , north: false   // alias group: { name: pane, pane: $Ps[pane], options: options[pane], state: state[pane], children: children[pane] }
                , south: false   // ditto
                , west: false   // ditto
                , east: false   // ditto
                , center: false   // ditto
            };

            // create the border layout NOW
            if (_create() === 'cancel') // onload_start callback returned false to CANCEL layout creation
                return null;
            else // true OR false -- if layout-elements did NOT init (hidden or do not exist), can auto-init later
                return Instance; // return the Instance object

        };
    }

)(jQuery);


/**
 * Cookie plugin
 *
 * Copyright (c) 2006 Klaus Hartl (stilbuero.de)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */
jQuery.cookie = function (name, value, options) {
    if (typeof value != 'undefined') { // name and value given, set cookie
        options = options || {};
        if (value === null) {
            value = '';
            options.expires = -1;
        }
        var expires = '';
        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
            var date;
            if (typeof options.expires == 'number') {
                date = new Date();
                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
            } else {
                date = options.expires;
            }
            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
        }
        // CAUTION: Needed to parenthesize options.path and options.domain
        // in the following expressions, otherwise they evaluate to undefined
        // in the packed version for some reason...
        var path = options.path ? '; path=' + (options.path) : '';
        var domain = options.domain ? '; domain=' + (options.domain) : '';
        var secure = options.secure ? '; secure' : '';
        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
    } else { // only name given, get cookie
        var cookieValue = null;
        if (document.cookie && document.cookie != '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jQuery.trim(cookies[i]);
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) == (name + '=')) {
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookieValue;
    }
};


(function ($) {

    if (!$.layout)
        return;


    /**
     * UI COOKIE UTILITY
     *
     * A $.cookie OR $.ui.cookie namespace *should be standard*, but until then...
     * This creates $.ui.cookie so Layout does not need the cookie.jquery.js plugin
     * NOTE: This utility is REQUIRED by the layout.state plugin
     *
     * Cookie methods in Layout are created as part of State Management
     */
    if (!$.ui)
        $.ui = {};
    $.ui.cookie = {
        // cookieEnabled is not in DOM specs, but DOES works in all browsers,including IE6
        acceptsCookies: !!navigator.cookieEnabled

        , read: function (name) {
            var
                c = document.cookie
                , cs = c ? c.split(';') : []
                , pair, data, i
            ;
            for (i = 0; pair = cs[i]; i++) {
                data = $.trim(pair).split('='); // name=value => [ name, value ]
                if (data[0] == name) // found the layout cookie
                    return decodeURIComponent(data[1]);
            }
            return null;
        }

        , write: function (name, val, cookieOpts) {
            var params = ""
                , date = ""
                , clear = false
                , o = cookieOpts || {}
                , x = o.expires || null
                , t = $.type(x)
            ;
            if (t === "date")
                date = x;
            else if (t === "string" && x > 0) {
                x = parseInt(x, 10);
                t = "number";
            }
            if (t === "number") {
                date = new Date();
                if (x > 0)
                    date.setDate(date.getDate() + x);
                else {
                    date.setFullYear(1970);
                    clear = true;
                }
            }
            if (date)
                params += ";expires=" + date.toUTCString();
            if (o.path)
                params += ";path=" + o.path;
            if (o.domain)
                params += ";domain=" + o.domain;
            if (o.secure)
                params += ";secure";
            document.cookie = name + "=" + (clear ? "" : encodeURIComponent(val)) + params; // write or clear cookie
        }

        , clear: function (name) {
            $.ui.cookie.write(name, "", {expires: -1});
        }

    };
// if cookie.jquery.js is not loaded, create an alias to replicate it
// this may be useful to other plugins or code dependent on that plugin
    if (!$.cookie)
        $.cookie = function (k, v, o) {
            var C = $.ui.cookie;
            if (v === null)
                C.clear(k);
            else if (v === undefined)
                return C.read(k);
            else
                C.write(k, v, o);
        };


    /**
     * State-management options stored in options.stateManagement, which includes a .cookie hash
     * Default options saves ALL KEYS for ALL PANES, ie: pane.size, pane.isClosed, pane.isHidden
     *
     * // STATE/COOKIE OPTIONS
     * @example $(el).layout({
     stateManagement: {
     enabled: true
     , stateKeys: "east.size,west.size,east.isClosed,west.isClosed"
     , cookie:  { name: "appLayout", path: "/" }
     }
     })
     * @example $(el).layout({ stateManagement__enabled: true }) // enable auto-state-management using cookies
     * @example $(el).layout({ stateManagement__cookie: { name: "appLayout", path: "/" } })
     * @example $(el).layout({ stateManagement__cookie__name: "appLayout", stateManagement__cookie__path: "/" })
     *
     * // STATE/COOKIE METHODS
     * @example myLayout.saveCookie( "west.isClosed,north.size,south.isHidden", {expires: 7} );
     * @example myLayout.loadCookie();
     * @example myLayout.deleteCookie();
     * @example var JSON = myLayout.readState(); // CURRENT Layout State
     * @example var JSON = myLayout.readCookie(); // SAVED Layout State (from cookie)
     * @example var JSON = myLayout.state.stateData; // LAST LOADED Layout State (cookie saved in layout.state hash)
     *
     * CUSTOM STATE-MANAGEMENT (eg, saved in a database)
     * @example var JSON = myLayout.readState( "west.isClosed,north.size,south.isHidden" );
     * @example myLayout.loadState( JSON );
     */

// tell Layout that the state plugin is available
    $.layout.plugins.stateManagement = true;

// Add State-Management options to layout.defaults
    $.layout.defaults.stateManagement = {
        enabled: false // true = enable state-management, even if not using cookies
        , autoSave: true // Save a state-cookie when page exits?
        , autoLoad: true // Load the state-cookie when Layout inits?
        , animateLoad: true // animate panes when loading state into an active layout
        , includeChildren: true // recurse into child layouts to include their state as well
        // List state-data to save - must be pane-specific
        , stateKeys: "north.size,south.size,east.size,west.size," +
        "north.isClosed,south.isClosed,east.isClosed,west.isClosed," +
        "north.isHidden,south.isHidden,east.isHidden,west.isHidden"
        , cookie: {
            name: "" // If not specified, will use Layout.name, else just "Layout"
            , domain: "" // blank = current domain
            , path: "" // blank = current page, "/" = entire website
            , expires: "" // 'days' to keep cookie - leave blank for 'session cookie'
            , secure: false
        }
    };

// Set stateManagement as a 'layout-option', NOT a 'pane-option'
    $.layout.optionsMap.layout.push("stateManagement");
// Update config so layout does not move options into the pane-default branch (panes)
    $.layout.config.optionRootKeys.push("stateManagement");

    /*
     * State Management methods
     */
    $.layout.state = {
        /**
         * Get the current layout state and save it to a cookie
         *
         * myLayout.saveCookie( keys, cookieOpts )
         *
         * @param {Object}   inst
         * @param {(string|Array)=} keys
         * @param {Object=}   cookieOpts
         */
        saveCookie: function (inst, keys, cookieOpts) {
            var o = inst.options
                , sm = o.stateManagement
                , oC = $.extend(true, {}, sm.cookie, cookieOpts || null)
                , data = inst.state.stateData = inst.readState(keys || sm.stateKeys) // read current panes-state
            ;
            $.ui.cookie.write(oC.name || o.name || "Layout", $.layout.state.encodeJSON(data), oC);
            return $.extend(true, {}, data); // return COPY of state.stateData data
        }

        /**
         * Remove the state cookie
         *
         * @param {Object} inst
         */
        , deleteCookie: function (inst) {
            var o = inst.options;
            $.ui.cookie.clear(o.stateManagement.cookie.name || o.name || "Layout");
        }

        /**
         * Read & return data from the cookie - as JSON
         *
         * @param {Object} inst
         */
        , readCookie: function (inst) {
            var o = inst.options;
            var c = $.ui.cookie.read(o.stateManagement.cookie.name || o.name || "Layout");
            // convert cookie string back to a hash and return it
            return c ? $.layout.state.decodeJSON(c) : {};
        }

        /**
         * Get data from the cookie and USE IT to loadState
         *
         * @param {Object} inst
         */
        , loadCookie: function (inst) {
            var c = $.layout.state.readCookie(inst); // READ the cookie
            if (c && !$.isEmptyObject(c)) {
                inst.state.stateData = $.extend(true, {}, c); // SET state.stateData
                inst.loadState(c); // LOAD the retrieved state
            }
            return c;
        }

        /**
         * Update layout options from the cookie, if one exists
         *
         * @param {Object}  inst
         * @param {Object=}  stateData
         * @param {boolean=} animate
         */
        , loadState: function (inst, data, opts) {
            if (!$.isPlainObject(data) || $.isEmptyObject(data))
                return;

            // normalize data & cache in the state object
            data = inst.state.stateData = $.layout.transformData(data); // panes = default subkey

            // add missing/default state-restore options
            var smo = inst.options.stateManagement;
            opts = $.extend({
                animateLoad: false //smo.animateLoad
                , includeChildren: smo.includeChildren
            }, opts);

            if (!inst.state.initialized) {
                /*
                 * layout NOT initialized, so just update its options
                 */
                // MUST remove pane.children keys before applying to options
                // use a copy so we don't remove keys from original data
                var o = $.extend(true, {}, data);
                //delete o.center; // center has no state-data - only children
                $.each($.layout.config.allPanes, function (idx, pane) {
                    if (o[pane])
                        delete o[pane].children;
                });
                // update CURRENT layout-options with saved state data
                $.extend(true, inst.options, o);
            } else {
                /*
                 * layout already initialized, so modify layout's configuration
                 */
                var noAnimate = !opts.animateLoad
                    , o, c, h, state, open
                ;
                $.each($.layout.config.borderPanes, function (idx, pane) {
                    o = data[pane];
                    if (!$.isPlainObject(o))
                        return; // no key, skip pane

                    s = o.size;
                    c = o.initClosed;
                    h = o.initHidden;
                    ar = o.autoResize;
                    state = inst.state[pane];
                    open = state.isVisible;

                    // reset autoResize
                    if (ar)
                        state.autoResize = ar;
                    // resize BEFORE opening
                    if (!open)
                        inst._sizePane(pane, s, false, false, false); // false=skipCallback/noAnimation/forceResize
                    // open/close as necessary - DO NOT CHANGE THIS ORDER!
                    if (h === true)
                        inst.hide(pane, noAnimate);
                    else if (c === true)
                        inst.close(pane, false, noAnimate);
                    else if (c === false)
                        inst.open(pane, false, noAnimate);
                    else if (h === false)
                        inst.show(pane, false, noAnimate);
                    // resize AFTER any other actions
                    if (open)
                        inst._sizePane(pane, s, false, false, noAnimate); // animate resize if option passed
                });

                /*
                 * RECURSE INTO CHILD-LAYOUTS
                 */
                if (opts.includeChildren) {
                    var paneStateChildren, childState;
                    $.each(inst.children, function (pane, paneChildren) {
                        paneStateChildren = data[pane] ? data[pane].children : 0;
                        if (paneStateChildren && paneChildren) {
                            $.each(paneChildren, function (stateKey, child) {
                                childState = paneStateChildren[stateKey];
                                if (child && childState)
                                    child.loadState(childState);
                            });
                        }
                    });
                }
            }
        }

        /**
         * Get the *current layout state* and return it as a hash
         *
         * @param {Object=}  inst // Layout instance to get state for
         * @param {object=}  [opts] // State-Managements override options
         */
        , readState: function (inst, opts) {
            // backward compatility
            if ($.type(opts) === 'string')
                opts = {keys: opts};
            if (!opts)
                opts = {};
            var sm = inst.options.stateManagement
                , ic = opts.includeChildren
                , recurse = ic !== undefined ? ic : sm.includeChildren
                , keys = opts.stateKeys || sm.stateKeys
                , alt = {isClosed: 'initClosed', isHidden: 'initHidden'}
                , state = inst.state
                , panes = $.layout.config.allPanes
                , data = {}
                , pair, pane, key, val
                , ps, pC, child, array, count, branch
            ;
            if ($.isArray(keys))
                keys = keys.join(",");
            // convert keys to an array and change delimiters from '__' to '.'
            keys = keys.replace(/__/g, ".").split(',');
            // loop keys and create a data hash
            for (var i = 0, n = keys.length; i < n; i++) {
                pair = keys[i].split(".");
                pane = pair[0];
                key = pair[1];
                if ($.inArray(pane, panes) < 0)
                    continue; // bad pane!
                val = state[pane][key];
                if (val == undefined)
                    continue;
                if (key == "isClosed" && state[pane]["isSliding"])
                    val = true; // if sliding, then *really* isClosed
                (data[pane] || (data[pane] = {}))[alt[key] ? alt[key] : key] = val;
            }

            // recurse into the child-layouts for each pane
            if (recurse) {
                $.each(panes, function (idx, pane) {
                    pC = inst.children[pane];
                    ps = state.stateData[pane];
                    if ($.isPlainObject(pC) && !$.isEmptyObject(pC)) {
                        // ensure a key exists for this 'pane', eg: branch = data.center
                        branch = data[pane] || (data[pane] = {});
                        if (!branch.children)
                            branch.children = {};
                        $.each(pC, function (key, child) {
                            // ONLY read state from an initialize layout
                            if (child.state.initialized)
                                branch.children[key] = $.layout.state.readState(child);
                            // if we have PREVIOUS (onLoad) state for this child-layout, KEEP IT!
                            else if (ps && ps.children && ps.children[key]) {
                                branch.children[key] = $.extend(true, {}, ps.children[key]);
                            }
                        });
                    }
                });
            }

            return data;
        }

        /**
         * Stringify a JSON hash so can save in a cookie or db-field
         */
        , encodeJSON: function (json) {
            var local = window.JSON || {};
            return (local.stringify || stringify)(json);

            function stringify(h) {
                var D = [], i = 0, k, v, t // k = key, v = value
                    , a = $.isArray(h)
                ;
                for (k in h) {
                    v = h[k];
                    t = typeof v;
                    if (t == 'string')  // STRING - add quotes
                        v = '"' + v + '"';
                    else if (t == 'object') // SUB-KEY - recurse into it
                        v = parse(v);
                    D[i++] = (!a ? '"' + k + '":' : '') + v;
                }
                return (a ? '[' : '{') + D.join(',') + (a ? ']' : '}');
            }
        }

        /**
         * Convert stringified JSON back to a hash object
         * @see  $.parseJSON(), adding in jQuery 1.4.1
         */
        , decodeJSON: function (str) {
            try {
                return $.parseJSON ? $.parseJSON(str) : window["eval"]("(" + str + ")") || {};
            } catch (e) {
                return {};
            }
        }


        , _create: function (inst) {
            var s = $.layout.state
                , o = inst.options
                , sm = o.stateManagement
            ;
            // ADD State-Management plugin methods to inst
            $.extend(inst, {
                // readCookie - update options from cookie - returns hash of cookie data
                readCookie: function () {
                    return s.readCookie(inst);
                }
                // deleteCookie
                , deleteCookie: function () {
                    s.deleteCookie(inst);
                }
                // saveCookie - optionally pass keys-list and cookie-options (hash)
                , saveCookie: function (keys, cookieOpts) {
                    return s.saveCookie(inst, keys, cookieOpts);
                }
                // loadCookie - readCookie and use to loadState() - returns hash of cookie data
                , loadCookie: function () {
                    return s.loadCookie(inst);
                }
                // loadState - pass a hash of state to use to update options
                , loadState: function (stateData, opts) {
                    s.loadState(inst, stateData, opts);
                }
                // readState - returns hash of current layout-state
                , readState: function (keys) {
                    return s.readState(inst, keys);
                }
                // add JSON utility methods too...
                , encodeJSON: s.encodeJSON
                , decodeJSON: s.decodeJSON
            });

            // init state.stateData key, even if plugin is initially disabled
            inst.state.stateData = {};

            // autoLoad MUST BE one of: data-array, data-hash, callback-function, or TRUE
            if (!sm.autoLoad)
                return;

            // When state-data exists in the autoLoad key USE IT,
            // even if stateManagement.enabled == false
            if ($.isPlainObject(sm.autoLoad)) {
                if (!$.isEmptyObject(sm.autoLoad)) {
                    inst.loadState(sm.autoLoad);
                }
            } else if (sm.enabled) {
                // update the options from cookie or callback
                // if options is a function, call it to get stateData
                if ($.isFunction(sm.autoLoad)) {
                    var d = {};
                    try {
                        d = sm.autoLoad(inst, inst.state, inst.options, inst.options.name || ''); // try to get data from fn
                    } catch (e) {
                    }
                    if (d && $.isPlainObject(d) && !$.isEmptyObject(d))
                        inst.loadState(d);
                } else // any other truthy value will trigger loadCookie
                    inst.loadCookie();
            }
        }

        , _unload: function (inst) {
            var sm = inst.options.stateManagement;
            if (sm.enabled && sm.autoSave) {
                // if options is a function, call it to save the stateData
                if ($.isFunction(sm.autoSave)) {
                    try {
                        sm.autoSave(inst, inst.state, inst.options, inst.options.name || ''); // try to get data from fn
                    } catch (e) {
                    }
                } else // any truthy value will trigger saveCookie
                    inst.saveCookie();
            }
        }

    };

// add state initialization method to Layout's onCreate array of functions
    $.layout.onCreate.push($.layout.state._create);
    $.layout.onUnload.push($.layout.state._unload);

})(jQuery);


(function ($) {

    if (!$.layout)
        return;


// tell Layout that the state plugin is available
    $.layout.plugins.buttons = true;

// Add State-Management options to layout.defaults
    $.layout.defaults.autoBindCustomButtons = false;
// Set stateManagement as a layout-option, NOT a pane-option
    $.layout.optionsMap.layout.push("autoBindCustomButtons");

    /*
     * Button methods
     */
    $.layout.buttons = {
        // set data used by multiple methods below
        config: {
            borderPanes: "north,south,west,east"
        }

        /**
         * Searches for .ui-layout-button-xxx elements and auto-binds them as layout-buttons
         *
         * @see  _create()
         */
        , init: function (inst) {
            var pre = "ui-layout-button-"
                , layout = inst.options.name || ""
                , name;
            $.each("toggle,open,close,pin,toggle-slide,open-slide".split(","), function (i, action) {
                $.each($.layout.buttons.config.borderPanes.split(","), function (ii, pane) {
                    $("." + pre + action + "-" + pane).each(function () {
                        // if button was previously 'bound', data.layoutName was set, but is blank if layout has no 'name'
                        name = $(this).data("layoutName") || $(this).attr("layoutName");
                        if (name == undefined || name === layout)
                            inst.onButton(this, action, pane);
                    });
                });
            });
        }

        /**
         * Helper function to validate params received by addButton utilities
         *
         * Two classes are added to the element, based on the buttonClass...
         * The type of button is appended to create the 2nd className:
         *  - ui-layout-button-pin
         *  - ui-layout-pane-button-toggle
         *  - ui-layout-pane-button-open
         *  - ui-layout-pane-button-close
         *
         * @param  {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
         * @param  {string}      pane   Name of the pane the button is for: 'north', 'south', etc.
         * @return {Array.<Object>}  If both params valid, the element matching 'selector' in a jQuery wrapper - otherwise returns null
         */
        , get: function (inst, selector, pane, action) {
            var $E = $(selector)
                , o = inst.options
                //, err = o.showErrorMessages
            ;
            if ($E.length && $.layout.buttons.config.borderPanes.indexOf(pane) >= 0) {
                var btn = o[pane].buttonClass + "-" + action;
                $E.addClass(btn + " " + btn + "-" + pane)
                    .data("layoutName", o.name); // add layout identifier - even if blank!
            }
            return $E;
        }


        /**
         * NEW syntax for binding layout-buttons - will eventually replace addToggle, addOpen, etc.
         *
         * @param {(string|!Object)} sel  jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
         * @param {string}   action
         * @param {string}   pane
         */
        , bind: function (inst, sel, action, pane) {
            var _ = $.layout.buttons;
            switch (action.toLowerCase()) {
                case "toggle":
                    _.addToggle(inst, sel, pane);
                    break;
                case "open":
                    _.addOpen(inst, sel, pane);
                    break;
                case "close":
                    _.addClose(inst, sel, pane);
                    break;
                case "pin":
                    _.addPin(inst, sel, pane);
                    break;
                case "toggle-slide":
                    _.addToggle(inst, sel, pane, true);
                    break;
                case "open-slide":
                    _.addOpen(inst, sel, pane, true);
                    break;
            }
            return inst;
        }

        /**
         * Add a custom Toggler button for a pane
         *
         * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
         * @param {string}     pane   Name of the pane the button is for: 'north', 'south', etc.
         * @param {boolean=}   slide   true = slide-open, false = pin-open
         */
        , addToggle: function (inst, selector, pane, slide) {
            $.layout.buttons.get(inst, selector, pane, "toggle")
                .click(function (evt) {
                    inst.toggle(pane, !!slide);
                    evt.stopPropagation();
                });
            return inst;
        }
        /**
         * Add a slide Toggler button for a pane
         *
         * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
         * @param {string}     pane   Name of the pane the button is for: 'north', 'south', etc.
         * @param {boolean=}   slide   true = slide-open, false = pin-open
         */
        , addSlideToggle: function (inst, selector, pane, slide) {
            $.layout.buttons.get(inst, selector, pane, "slideToggle")
                .click(function (evt) {
                    inst.slideToggle(pane, !!slide);
                    evt.stopPropagation();
                });
            return inst;
        }

        /**
         * Add a custom Open button for a pane
         *
         * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
         * @param {string}   pane   Name of the pane the button is for: 'north', 'south', etc.
         * @param {boolean=}   slide   true = slide-open, false = pin-open
         */
        , addOpen: function (inst, selector, pane, slide) {
            $.layout.buttons.get(inst, selector, pane, "open")
                .attr("title", inst.options[pane].tips.Open)
                .click(function (evt) {
                    inst.open(pane, !!slide);
                    evt.stopPropagation();
                });
            return inst;
        }

        /**
         * Add a custom Close button for a pane
         *
         * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
         * @param {string}     pane   Name of the pane the button is for: 'north', 'south', etc.
         */
        , addClose: function (inst, selector, pane) {
            $.layout.buttons.get(inst, selector, pane, "close")
                .attr("title", inst.options[pane].tips.Close)
                .click(function (evt) {
                    inst.close(pane);
                    evt.stopPropagation();
                });
            return inst;
        }

        /**
         * Add a custom Pin button for a pane
         *
         * Four classes are added to the element, based on the paneClass for the associated pane...
         * Assuming the default paneClass and the pin is 'up', these classes are added for a west-pane pin:
         *  - ui-layout-pane-pin
         *  - ui-layout-pane-west-pin
         *  - ui-layout-pane-pin-up
         *  - ui-layout-pane-west-pin-up
         *
         * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
         * @param {string}     pane   Name of the pane the pin is for: 'north', 'south', etc.
         */
        , addPin: function (inst, selector, pane) {
            var $E = $.layout.buttons.get(inst, selector, pane, "pin");
            if ($E.length) {
                var s = inst.state[pane];
                $E.click(function (evt) {
                    $.layout.buttons.setPinState(inst, $(this), pane, (s.isSliding || s.isClosed));
                    if (s.isSliding || s.isClosed)
                        inst.open(pane); // change from sliding to open
                    else
                        inst.close(pane); // slide-closed
                    evt.stopPropagation();
                });
                // add up/down pin attributes and classes
                $.layout.buttons.setPinState(inst, $E, pane, (!s.isClosed && !s.isSliding));
                // add this pin to the pane data so we can 'sync it' automatically
                // PANE.pins key is an array so we can store multiple pins for each pane
                s.pins.push(selector); // just save the selector string
            }
            return inst;
        }

        /**
         * Change the class of the pin button to make it look 'up' or 'down'
         *
         * @see  addPin(), syncPins()
         * @param {Array.<Object>} $Pin The pin-span element in a jQuery wrapper
         * @param {string} pane These are the params returned to callbacks by layout()
         * @param {boolean} doPin true = set the pin 'down', false = set it 'up'
         */
        , setPinState: function (inst, $Pin, pane, doPin) {
            var updown = $Pin.attr("pin");
            if (updown && doPin === (updown == "down"))
                return; // already in correct state
            var
                po = inst.options[pane]
                , lang = po.tips
                , pin = po.buttonClass + "-pin"
                , side = pin + "-" + pane
                , UP = pin + "-up " + side + "-up"
                , DN = pin + "-down " + side + "-down"
            ;
            $Pin
                .attr("pin", doPin ? "down" : "up") // logic
                .attr("title", doPin ? lang.Unpin : lang.Pin)
                .removeClass(doPin ? UP : DN)
                .addClass(doPin ? DN : UP)
            ;
        }

        /**
         * INTERNAL function to sync 'pin buttons' when pane is opened or closed
         * Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
         *
         * @see  open(), close()
         * @param {string} pane   These are the params returned to callbacks by layout()
         * @param {boolean} doPin  True means set the pin 'down', False means 'up'
         */
        , syncPinBtns: function (inst, pane, doPin) {
            // REAL METHOD IS _INSIDE_ LAYOUT - THIS IS HERE JUST FOR REFERENCE
            $.each(state[pane].pins, function (i, selector) {
                $.layout.buttons.setPinState(inst, $(selector), pane, doPin);
            });
        }


        , _load: function (inst) {
            // ADD Button methods to Layout Instance
            $.extend(inst, {
                bindButton: function (selector, action, pane) {
                    return $.layout.buttons.on(inst, selector, action, pane);
                }
                // DEPRECATED METHODS...
                , addToggleBtn: function (selector, pane, slide) {
                    return $.layout.buttons.addToggle(inst, selector, pane, slide);
                }
                , addSlideToggleBtn: function (selector, pane, slide) {
                    return $.layout.buttons.addSlideToggle(inst, selector, pane, slide);
                }
                , addOpenBtn: function (selector, pane, slide) {
                    return $.layout.buttons.addOpen(inst, selector, pane, slide);
                }
                , addCloseBtn: function (selector, pane) {
                    return $.layout.buttons.addClose(inst, selector, pane);
                }
                , addPinBtn: function (selector, pane) {
                    return $.layout.buttons.addPin(inst, selector, pane);
                }
            });

            // init state array to hold pin-buttons
            for (var i = 0; i < 4; i++) {
                var pane = $.layout.buttons.config.borderPanes[i];
                inst.state[pane].pins = [];
            }

            // auto-init buttons onLoad if option is enabled
            if (inst.options.autoBindCustomButtons)
                $.layout.buttons.init(inst);
        }

        , _unload: function (inst) {
            // TODO: unbind all buttons???
        }

    };

// add initialization method to Layout's onLoad array of functions
    $.layout.onLoad.push($.layout.buttons._load);
//$.layout.onUnload.push( $.layout.buttons._unload );

})(jQuery);


/**
 * jquery.layout.browserZoom 1.0
 * $Date: 2011-12-29 08:00:00 (Thu, 29 Dec 2011) $
 *
 * Copyright (c) 2012
 *   Kevin Dalman (http://allpro.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * @requires: UI Layout 1.3.0.rc30.1 or higher
 *
 * @see: http://groups.google.com/group/jquery-ui-layout
 *
 * TODO: Extend logic to handle other problematic zooming in browsers
 * TODO: Add hotkey/mousewheel bindings to _instantly_ respond to these zoom event
 */
(function ($) {

// tell Layout that the plugin is available
    $.layout.plugins.browserZoom = true;

    $.layout.defaults.browserZoomCheckInterval = 1000;
    $.layout.optionsMap.layout.push("browserZoomCheckInterval");

    /*
     * browserZoom methods
     */
    $.layout.browserZoom = {
        _init: function (inst) {
            // abort if browser does not need this check
            if ($.layout.browserZoom.ratio() !== false)
                $.layout.browserZoom._setTimer(inst);
        }

        , _setTimer: function (inst) {
            // abort if layout destroyed or browser does not need this check
            if (inst.destroyed)
                return;
            var o = inst.options
                , s = inst.state
                // don't need check if inst has parentLayout, but check occassionally in case parent destroyed!
                // MINIMUM 100ms interval, for performance
                , ms = inst.hasParentLayout ? 5000 : Math.max(o.browserZoomCheckInterval, 100)
            ;
            // set the timer
            setTimeout(function () {
                    if (inst.destroyed || !o.resizeWithWindow)
                        return;
                    var d = $.layout.browserZoom.ratio();
                    if (d !== s.browserZoom) {
                        s.browserZoom = d;
                        inst.resizeAll();
                    }
                    // set a NEW timeout
                    $.layout.browserZoom._setTimer(inst);
                }
                , ms);
        }

        , ratio: function () {
            var w = window
                , s = screen
                , d = document
                , dE = d.documentElement || d.body
                , b = $.layout.browser
                , v = b.version
                , r, sW, cW
            ;
            // we can ignore all browsers that fire window.resize event onZoom
            if (!b.msie || v > 8)
                return false; // don't need to track zoom
            if (s.deviceXDPI && s.systemXDPI) // syntax compiler hack
                return calc(s.deviceXDPI, s.systemXDPI);
            // everything below is just for future reference!
            if (b.webkit && (r = d.body.getBoundingClientRect))
                return calc((r.left - r.right), d.body.offsetWidth);
            if (b.webkit && (sW = w.outerWidth))
                return calc(sW, w.innerWidth);
            if ((sW = s.width) && (cW = dE.clientWidth))
                return calc(sW, cW);
            return false; // no match, so cannot - or don't need to - track zoom

            function calc(x, y) {
                return (parseInt(x, 10) / parseInt(y, 10) * 100).toFixed();
            }
        }

    };
// add initialization method to Layout's onLoad array of functions
    $.layout.onReady.push($.layout.browserZoom._init);


})(jQuery);


(function ($) {

// Add a new "slideOffscreen" effect
    if ($.effects) {

        // add an option so initClosed and initHidden will work
        $.layout.defaults.panes.useOffscreenClose = false; // user must enable when needed
        /* set the new animation as the default for all panes
         $.layout.defaults.panes.fxName = "slideOffscreen";
         */

        if ($.layout.plugins)
            $.layout.plugins.effects.slideOffscreen = true;

        // dupe 'slide' effect defaults as new effect defaults
        $.layout.effects.slideOffscreen = $.extend(true, {}, $.layout.effects.slide);

        // add new effect to jQuery UI
        $.effects.slideOffscreen = function (o) {
            return this.queue(function () {

                var fx = $.effects
                    , opt = o.options
                    , $el = $(this)
                    , pane = $el.data('layoutEdge')
                    , state = $el.data('parentLayout').state
                    , dist = state[pane].size
                    , s = this.style
                    , props = ['top', 'bottom', 'left', 'right']
                    // Set options
                    , mode = fx.setMode($el, opt.mode || 'show') // Set Mode
                    , show = (mode == 'show')
                    , dir = opt.direction || 'left' // Default Direction
                    , ref = (dir == 'up' || dir == 'down') ? 'top' : 'left'
                    , pos = (dir == 'up' || dir == 'left')
                    , offscrn = $.layout.config.offscreenCSS || {}
                    , keyLR = $.layout.config.offscreenReset
                    , keyTB = 'offscreenResetTop' // only used internally
                    , animation = {}
                ;
                // Animation settings
                animation[ref] = (show ? (pos ? '+=' : '-=') : (pos ? '-=' : '+=')) + dist;

                if (show) { // show() animation, so save top/bottom but retain left/right set when 'hidden'
                    $el.data(keyTB, {top: s.top, bottom: s.bottom});

                    // set the top or left offset in preparation for animation
                    // Note: ALL animations work by shifting the top or left edges
                    if (pos) { // top (north) or left (west)
                        $el.css(ref, isNaN(dist) ? "-" + dist : -dist); // Shift outside the left/top edge
                    } else { // bottom (south) or right (east) - shift all the way across container
                        if (dir === 'right')
                            $el.css({left: state.container.layoutWidth, right: 'auto'});
                        else // dir === bottom
                            $el.css({top: state.container.layoutHeight, bottom: 'auto'});
                    }
                    // restore the left/right setting if is a top/bottom animation
                    if (ref === 'top')
                        $el.css($el.data(keyLR) || {});
                } else { // hide() animation, so save ALL CSS
                    $el.data(keyTB, {top: s.top, bottom: s.bottom});
                    $el.data(keyLR, {left: s.left, right: s.right});
                }

                // Animate
                $el.show().animate(animation, {
                    queue: false, duration: o.duration, easing: opt.easing, complete: function () {
                        // Restore top/bottom
                        if ($el.data(keyTB))
                            $el.css($el.data(keyTB)).removeData(keyTB);
                        if (show) // Restore left/right too
                            $el.css($el.data(keyLR) || {}).removeData(keyLR);
                        else // Move the pane off-screen (left: -99999, right: 'auto')
                            $el.css(offscrn);

                        if (o.callback)
                            o.callback.apply(this, arguments); // Callback
                        $el.dequeue();
                    }
                });

            });
        };

    }

})(jQuery);


(function ($) {
    var _ = $.layout;

// make sure the callbacks branch exists
    if (!_.callbacks)
        _.callbacks = {};

    _.callbacks.resizePaneAccordions = function (x, ui) {
        // may be called EITHER from layout-pane.onresize OR tabs.show
        var $P = ui.jquery ? ui : $(ui.newPanel || ui.panel);
        // find all VISIBLE accordions inside this pane and resize them
        $P.find(".ui-accordion:visible").each(function () {
            var $E = $(this);
            if ($E.data("accordion"))  // jQuery < 1.9
                $E.accordion("resize");
            if ($E.data("ui-accordion")) // jQuery >= 1.9
                $E.accordion("refresh");
        });
    };
})(jQuery);


(function ($) {
    $.layout.callbacks.resizeDataTables = function (x, ui) {
        // may be called EITHER from layout-pane.onresize OR tabs.show
        var oPane = ui.jquery ? ui[0] : ui.panel;
        // cannot resize if the pane is currently closed or hidden
        if (!$(oPane).is(":visible"))
            return;
        // find all data tables inside this pane and resize them
        $($.fn.dataTable.fnTables(true)).each(function (i, table) {
            if ($.contains(oPane, table)) {
                $(table).dataTable().fnAdjustColumnSizing();
            }
        });
    };
})(jQuery);


(function ($) {
    var _ = $.layout;

// make sure the callbacks branch exists
    if (!_.callbacks)
        _.callbacks = {};

// this callback is bound to the tabs.show event OR to layout-pane.onresize event
    _.callbacks.resizeTabLayout = function (x, ui) {
        // may be called EITHER from layout-pane.onresize OR tabs.show/activate
        var $P = ui.jquery ? ui : $(ui.newPanel || ui.panel);
        // find all VISIBLE layouts inside this pane/panel and resize them
        $P.filter(":visible").find(".ui-layout-container:visible").addBack().each(function () {
            var layout = $(this).data("layout");
            if (layout) {
                layout.options.resizeWithWindow = false; // set option just in case not already set
                layout.resizeAll();
            }
        });
    };
})
(jQuery);



